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ada yang bisa bantu ga? soal nya ga ngerti btw

Berikut ini adalah pertanyaan dari rafaelsimarmata16 pada mata pelajaran Matematika untuk jenjang Sekolah Menengah Atas

Ada yang bisa bantu ga? soal nya ga ngerti btw pake cara ya :D1. Hasil dari −15 + 8 − (−7) =
2. Hasil dari 7 × (−3) + (−30) ∶ 5 × (−2) =
3. Hasil dari 49 ∶ 7 × (−2) + (−20) ∶ 2 × (−3) =

Jawaban dan Penjelasan

Berikut ini adalah pilihan jawaban terbaik dari pertanyaan diatas.

\large{ \colorbox{lavender}{ \purple{ \boxed{ \green{ \star{ \purple{ \rm{«Penyelesaian \: Soal»: \green{ \star}}}}}}}}}

\:

\huge{ \purple{ \mathfrak{♡Pembahasan♡ : }}}

\:

  • 1.) -15 + 8 - (-7)

= (-15 + 8 ) - (-7)

= -(15 - 8 ) - ( -7)

= -7 - (-7)

= -7 + 7

= \underline{\boxed{\red{\sf{0}}}}

~

  • 2.) 7 × (-3) + (-30) ÷ 5 × (-2)

= ( 7 × (-3)) + ((-30) ÷ 5) × (-2)

= -(7 × 3 ) + (-(30 ÷ 5 )) × (-2)

= -21 + (-6) × (-2)

= -21 + ( (-6) × (-2))

= -21 + ( 6 × 2 )

= -21 + 12

= -(21 + 12 )

= \underline{\boxed{\red{\sf{-9}}}}

~

  • 3.) 49 ÷ 7 × (-2) + (-20) ÷ 2 × (-3)

= (49 ÷ 7) × (-2) + ((-20) ÷ 2) × (-3)

= 7 × (-2) + (-(20 ÷ 2)( × (-3)

= (7 × (-2)) + (-10) × (-3)

= -(7 × 2 ) + (-10 × (-3))

= -14 + (10 × 3 )

= -14 + 30

= 30 + (-14)

= 30 - 14

= \underline{\boxed{\red{\sf{16}}}}

\:

_________________________________________________________________________________________________________________________

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[tex]\large{ \colorbox{lavender}{ \purple{ \boxed{ \green{ \star{ \purple{ \rm{«Penyelesaian \: Soal»: \green{ \star}}}}}}}}}[/tex][tex] \: [/tex][tex]\huge{ \purple{ \mathfrak{♡Pembahasan♡ : }}}[/tex][tex] \: [/tex]1.) -15 + 8 - (-7)= (-15 + 8 ) - (-7)= -(15 - 8 ) - ( -7)= -7 - (-7)= -7 + 7= [tex]\underline{\boxed{\red{\sf{0}}}}[/tex][tex]~[/tex]2.) 7 × (-3) + (-30) ÷ 5 × (-2)= ( 7 × (-3)) + ((-30) ÷ 5) × (-2)= -(7 × 3 ) + (-(30 ÷ 5 )) × (-2)= -21 + (-6) × (-2)= -21 + ( (-6) × (-2))= -21 + ( 6 × 2 )= -21 + 12= -(21 + 12 )= [tex]\underline{\boxed{\red{\sf{-9}}}}[/tex][tex]~[/tex]3.) 49 ÷ 7 × (-2) + (-20) ÷ 2 × (-3)= (49 ÷ 7) × (-2) + ((-20) ÷ 2) × (-3)= 7 × (-2) + (-(20 ÷ 2)( × (-3)= (7 × (-2)) + (-10) × (-3)= -(7 × 2 ) + (-10 × (-3))= -14 + (10 × 3 )= -14 + 30= 30 + (-14)= 30 - 14= [tex]\underline{\boxed{\red{\sf{16}}}}[/tex][tex] \: [/tex][tex]_________________________________________________________________________________________________________________________[/tex][tex] \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ [/tex] =========[tex]\colorbox{ff0000}{} \colorbox{ff4000}{}\colorbox{ff8000}{}\colorbox{ffc000}{}\colorbox{ffff00}{}\colorbox{c0ff00}{}\colorbox{80ff00}{}\colorbox{40ff00}{}\colorbox{00ff00}{}\colorbox{00ff40}{}\colorbox{00ff80}{}\colorbox{00ffc0}{}\colorbox{00ffff}{}\colorbox{00c0ff}{}\colorbox{0080ff}{}\colorbox{0040ff}{}\colorbox{0000ff}{}\colorbox{4000ff}{}\colorbox{8000ff}{}\colorbox{c000ff}{}\colorbox{ff00ff}{}\colorbox{ff00c0}{}\colorbox{ff00a0}{}\colorbox{ff0080}{}\colorbox{ff0040}{}[/tex][tex] \: [/tex][tex]\colorbox{black} { \blue{ \boxed{ \boxed{\rm\color{FF6666}{༆@}\color{FFB266}{O}\color{B2FF66}{n}\color{66FF66}{l}\color{66FFFF}{y}\color{66B2FF}{Y}\color{6666FF}{o}\color{B266FF}{o}\color{FF66FF}{j}\color{FF66B2}{i}\color{FF9999}{n}\color{FFCC99}{࿐}}}}}[/tex]

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Last Update: Sat, 03 Dec 22
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