Question

Resolva as expressões: a. ( -3 – 6) + ( +6 - 12) = c. – ( -2 - 3 – 4 ) + ( - 15 + 14 + 8)= b. – ( +15 – 20) – ( -6 + 19) = d. + ( - 4 + 15) – ( + 26 – 20) + ( -3 + 10)=​

Answer 1

Explicação passo-a-passo:

a) (-3 - 6) + (6 - 12) = -9 - 6 = -15

c) -(-2 - 3 - 4) + (-15 + 14 + 8) = -(-9) + (-15 + 22) = 9 + 7 = 16

b) -(15 - 20) - (-6 + 19) = -(-5) - 13 = 5 - 13 = -8

d) (-4 + 15) - (26 - 20) + (-3 + 10) = 11 - 6 + 7 = 18 - 6 = 12