Question

Resolva as equações
a) 4 = 2x+4
b) x+1+2x = 1-3x

Answer 1

a)
4=2x+4

2x=4-4

2x=0
x=0/2
x=0

S={0}

b)
x+1+2x=1-3x
x+2x+3x=1-1
6x=0
x=0/6
x=0
S={0}