Question

a) 2x+6x/2=5 b)x+3x/2 =4 c)x/2+x/3=5

Answer 1

A)
2x+6x/2=5
4x+6x=10
10x=10
x=10/10
x=1

b)
x+3x/2 =4
2x+3x=8
5x=8
x=8/5

c)
x/2+x/3=5  --->mmc=6
3x+2x=30
5x=30
x=30/5
x=6

Answer 2

Olá, boa noite ☺

Resoluções:

A)

2x+6x/2=5
4x+6x=10
10x=10
x=10/10.
x=1.

B)

x+3x/2 =4
2x+3x=4
5x=4
x=4/5.

C)

x/2+x/3=5

m.m.c.(2,3)=6

(3x+2x)/6=30/6

Elimina-se o denominador 6.

3x+2x=30
5x=30.
x=30/5.
x=6.

Bons estudos :)