Question

Resolva as equações a seguir
A) 18x-43=65
B)23x-16=14-17x
C) 10y-5(1+y)=3(2y-2)-20
D)4(x+4)+2(x+2)=x+12
E)2(x+6)-x=5x​

Answer 1

A)R:6

B)R:13,333

C)R:21

D)R:-1,6

E)R:3

Explicação passo-a-passo:

A)18x=65+43

18x=108

x=108/18

x=6

B)23x+17x=14+16

40x=30

x=30/40

x=13,333...

C)10y-5.(1+y)=3.(2y-2)-20

10y-5-5y=6y-6-20

10y-5y-6y=-6-20+5

-y=-21

y=-21/-1

y=21

D)4.(x+4)+2.(x+2)=x+12

4x+16+2x+4=x+12

4x+2x-x=12-16-4

5x=-8

x=-8/5

x=-1,6

E)2.(x+6)-x=5x

2x+12-x=5x

2x-x-5x=-12

-4x=-12

x=-12/-4

x=3