Question

a)x-100+x+10
b)x+5x+30
c)x+45-x-45
d)3x+30-5x-90

Answer 1

a) x-100+x+10=0
2x=90
x=90/2
x=45

B)x+5x+30=0
6x=-30
x=-6

C) 0

D) 3x+30-5x-90=0
-3x-60=0
x=60/-3
x=-20

Answer 2

Resposta:

a) 2x - 90

b) 6x + 30

c) 0

d) - 2x - 120

$a)x-100+x+10=\\\boxed{2x-90}\\ \\b)x+5x+30=\\\boxed{6x+30} \\\\c)x+45-x-45=\\0+0=\\\boxed{0}\\ \\d)3x+30-5x-90=\\\boxed {-2x-120}$