Question

Calcule o valor das expressões:

A) 1-(8-1)-(-3)+4


B) -(3-5)-(-4+6)-(-1)


C) -30+(-4-1)-(-1-7)

Answer 1

a)1-7+3+4= -6+7= 1

b)-3+5+4-6+1= 2-2+1=1

c)-30-5+8= -35+8= -27

Answer 2

A= 1 -8 +1 +3 + 4 = 1 B= -3 + 5 +4 -6 +1 = 1 C= -30 -4 -1 +1 +7 = - 27