Question

Exercicios: POR FAVOR COM CALCULOS!

Answer 1

$114)a) ( - 10) + x = + 4 \\ x = + 4 + 10 \\ x = + 14$

$114)b) \: ( - 15) + x = - 3 \\ x = - 3 + 15 \\ x = + 12$

$114)c) \: ( + 7) \times x = - 8 \\ x = - 8 - 7 \\ x = - 15$

114)d) (-6) + x = -12

x = -12 +6

x = -6

115)a) 14-(10+1)-(-3)+4 = 14 -11+3+4 = 3+7 = 10

b) -(3-5)-(4+8)-(-1) = +8-4+1 = 8-3 = 5

c) -30+(-5-1)-(-1-7) = -30-6+8 = -30+2 = -28

d) (-10).(-2)-(-18) = 20+18 = 38

e) -15+10:(2-7) = -5:-5 = 1

f) 40:(-1)^5+(-2)^3-12 = 40:(-1)-8-12 = 40:(-1) -20 = -40-20 = -60