1. (-5) × (-8)+ ( 12-(-7) ) 2. 3/4 × 4 2/3 + 1/2

(-5) × (-8)+ ( 12-(-7) ) =
40 + (12 + 7) =
40 + 19 =
59

3/4 × 4 2/3 + 1/2 =
3/4 X 14/3 = 42/12 = 3
3 + 1/2 =6/2 + 1/2 = 7/2 = 3 1/2

1) ((-5) x (-8)) + (12 - (-7))
= 40 + (12 + 7)
= 40 + 19
= 59

2) ((3/4) x (4 2/3)) + 1/2
=((3/4) x (14/3)) + 1/2
= (42/12) + (1/2)
= 42/12 + 6/12
= 48/12
= 4

semoga bermanfaat