Вычислите: 1) (15-30)-(10-20) 2)(40-70)-(15-45) 3)(1-19)-(31-41) 4)(-45+10)-(-8- 0)

Question

Вычислите:
1) (15-30)-(10-20)
2)(40-70)-(15-45)
3)(1-19)-(31-41)
4)(-45+10)-(-8- 0)

Answer 1

1) = -15 +10= -5
2) = -30 + 30 = 0
3) = -18 + 10 = -8
4) = - 35 + 8 = 27