Question

38
Vamos resolver:
a) 2x + 5 = 5 + 2x
b) 2x - 1 = -(1 - 2x)
c) 3(x + 2) = 2(x + 4) + x - 4
d) {1+ 2x+1=1 - 1​

Answer 1

Resposta:

a)2x+5=5+2x

2x-2x=5-5

X=0

b)2x-1=-(1-2x)

2x-1=-1 +2x

4x=-1+1

x= 0/4

c)3(x+2)=2(x+4)+x-4

3x+6=2x+8+x-4

3x-2x-x=8-4-6

x= -2/0

d)1+2x+1=1-1

2x=1-1-1-1

2x=-2

x= -1

Espero ter ajudado;)