Question

Resolva as expressões: a)-5²+(-3).(-1+7)-[3-5.(-1+2)]


b) (+5-4). [-12+(-5+15): (+1-3)]
pfvr é pra hoje!!!​

Answer 1

Resposta:

a)

$- 5 {}^{2} + ( - 3) \times (6) - (3 - 5(1)) \\ - 25 + ( - 18) - (3 - 5) \\ - 25 - 18 - ( - 2) \\ - 43 + 2 \\ - 41$

b)

$(5 - 4) \times ( - 12 + (10) \div ( - 2)) \\ 1 \times ( - 12 + 10 \div ( - 2)) \\ 1 \times ( - 12 + ( - 5)) \\ 1 \times ( - 17) \\ - 17$