Jawaban:

kada pakai cara

1. 2x+y = 16 dan x = 4-y

x = - 1/2y + 8 dan x = - y + 4

2. x-3y = 1 dan x - 2y = 2

x = 3y + 1 dan x = 2y + 2

3. 2p + 4q + 2 = 0 dan 3p - q - 11 = 0

p = - 2q - 1 dan p = 1/3q + 11/3

4. 4a-6b=10 dan 6b-a = 25

a = 3/2b + 5/2 dan a = 6b - 25

pakai cara

1. 2x + y = 16

2x = 16 - y

2x = -y + 16

x = ( - y + 16 ) : 2

x = ( - y + 16 ) × 1/2

x = - 1/2y + 16 × 1/2

x = - 1/2y + 8

dan x = 4 - y

x = - y + 4

2. x - 3y = 1

x - 3y - ( - 3y ) = 1 - ( - 3y )

x = 1 - ( - 3y )

x = 3y + 1

dan x - 2y = 2

x - 2y - ( - 2y ) = 2 - ( - 2y)

x = 2 - ( - 2y)

x = 2y + 2

3. 2p + 4q + 2 = 0

2p = 0 - ( 4q ) - 2

2p = - 4q - 2

p = ( - 4q - 2 ) : 2

p = ( - 4q - 2 ) × 1/2

p = - 4q × 1/2 - 2 × 1/2

p = - 2q - 2 × 1/2

p = - 2q - 1

dan 3p - q - 11 = 0

3p = 0 + q + 11

3p = q + 11

p = ( q + 11 ) : 3

p = ( q + 11 ) × 1/3

p = 1/3q + 11 × 1/3

p = 1/3q + 11/3

4. 4a - 6b = 10

4a - 6b - ( - 6b ) = 10 - ( - 6b )

4a = 10 - ( - 6 b )

4a = 6b + 10

a = ( 6b + 10 ) : 4

a = ( 6 b + 10 ) × 1/4

a = 6b × 1/4 + 10 × 1/4

a = 3/2b + 10 × 1/4

a = 3/2b + 5/2

dan 6b - a = 25

- a = 25 - 6b

- a = 6b + 25

a = 6b - 25

semoga membantu

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