Question

Resolva as questões:​

Answer 1

Resposta:

Explicação passo a passo:

c.

x+2/2x+1=3/5

3(2x+1)=5(x+2)

6x+3=5x+10

6x-5x=10-3

x=7

d.

3x+1/5x-1=4/6

6(3x+1)=4(5x-1)

18x+6=20x-4

18x-20x=-4-6

-2x=-10 (-1)

2x=10

x=10/2

x=5