tolong bantuannya kak.. 1. 12 × 15 × ( -5 ) = 2. 45 × ( -9 ) × 2 = 3. (561 × ( -67 )) - (561 × 13 ) = 4. 121 × ( 30 - 2 ) = pakai cara ya kak..

1. 12 × 15 × ( -5 )
= 180 x (-5)
= -900.

2. 45 × ( -9 ) × 2
= -405 x 2
= -810.

3. (561 × ( -67 )) - (561 × 13 )
= -37587 - 7293
= -383180.

4. 121 × ( 30 - 2 )
= 121 x 28
= 3388.

1. 12 × 15 × (-5)
110×(-5)
-550
2. 45×(-9)×2
-405 × 28

-810
3. (516 × (-67))-(516×13)
(-34572)-6708
41280
4. 121× (30-2)
121×2
3388