Tabel 1.3

1. b + c = 9  ; a x (b + c) = 9 ;  a x b = 5  ; a x c  = 4  ; (a x b) + (a x c) = 9

2. b + c =  3  ; a x (b + c) = -6 ; a x b = -12  ; a x c  = 6  ; (a x b) + (a x c) =  -6

3. b + c = -5  ; a x (b + c)  = -15 ;  a x b  = -21  ; a x c = 6  ; (a x b) + (a x c) =  -15

4. b + c = -9  ; a x (b + c) = 36 ; a x b  = 32  ; a x c = 4  ; (a x b) + (a x c) = 36

Tabel 1.4

1. b - c = 1  ; a x (b - c) = 1 ;  a x b  = 5  ; a x c  = 4  ; (a x b) - (a x c) = 1

2.  b - c = 9  ; a x (b - c)= -18 ;  a x b = -12  ; a x c  = 6  ; (a x b) - (a x c) = -18

3. b - c = -9  ; a x (b - c) = -27 ;  a x b = -21  ; a x c = 6  ; (a x b) - (a x c)  = -27

4. b - c = -7  ; a x (b - c) = 28 ;  a x b  = 32  ; a x c = 4  ; (a x b) - (a x c) = 28

Penjelasan dengan langkah-langkah:

Diketahui:

Tabel 1.3

1. a = 1 ; b = 5; c = 4

2. a = -2 ; b = 6; c = -3

3. a = 3 ; b = -7; c = 2

4. a = -4 ; b = -8; c = -1

Tabel 1.4

1.  a = 1 ; b = 5; c = 4

2.  a = -2 ; b = 6; c = -3

3.  a = 3 ; b = -7; c = 2

4.  a = -4 ; b = -8; c = -1

Ditanya:

Tabel 1.3

b + c ...?  ;  a x (b + c) ...? ;  a x b....?  ; a x c....?  ;  (a x b) + (a x c)....?

Tabel 1.4

b - c....?  ;  a x (b - c)...?  ;  a x b.....?  ;  a x c....?  ;  (a x b) - (a x c)....?

Jawab:

Tabel 1.3

1. b + c = 5 + 4 = 9  ; a x (b + c) = 1 x 9 = 9 ;  a x b = 1 x 5 = 5  ;

a x c = 1 x 4 = 4  ; (a x b) + (a x c) = 5 + 4 = 9

2. b + c = 6 + (-3) = 3  ; a x (b + c) = -2 x 3 = -6 ;  a x b = -2 x 6 = -12  ;

a x c = -2 x -3 = 6  ; (a x b) + (a x c) = -12 + 6 = -6

3. b + c = -7 + 2 = -5  ; a x (b + c) = 3 x -5 = -15 ;  a x b = 3 x -7 = -21  ;

a x c = 3 x 2 = 6  ; (a x b) + (a x c) = -21 + 6 = -15

4. b + c = -8 + (-1) = -9  ; a x (b + c) = -4 x (-9) = 36 ;  a x b = -4 x -8 = 32  ;

a x c = -4 x -1 = 4  ; (a x b) + (a x c) = 32 + 4 = 36

Pada kolom 6 yakni  a x (b + c) dan kolom 9 yakni (a x b) + (a x c) menghasilkan hasil perhitungan yang sama.

Tabel 1.4

1. b - c = 5 - 4 = 1  ; a x (b - c) = 1 x 1 = 1 ;  a x b = 1 x 5 = 5  ;

a x c = 1 x 4 = 4  ; (a x b) - (a x c) = 5 - 4 = 1

2.  b - c = 6 - (-3) = 9  ; a x (b - c) = -2 x 9 = -18 ;  a x b = -2 x 6 = -12  ;

a x c = -2 x -3 = 6  ; (a x b) - (a x c) = -12 - 6 = -18

3. b - c = -7 - 2 = -9  ; a x (b - c) = 3 x -9 = -27 ;  a x b = 3 x -7 = -21  ;

a x c = 3 x 2 = 6  ; (a x b) - (a x c) = -21 - 6 = -27

4. b - c = -8 - (-1) = -7  ; a x (b - c) = -4 x (-7) = 28 ;  a x b = -4 x -8 = 32  ;

a x c = -4 x -1 = 4  ; (a x b) - (a x c) = 32 - 4 = 28

Pada kolom 6 yakni  a x (b + c) dan kolom 9 yakni (a x b) + (a x c) menghasilkan hasil perhitungan yang sama.

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