Question

D)2.(x-2)=10
F)2.(x-1)=x
G)5+2(1+x)=9​

Answer 1

Resposta:

D)x = 7

F)x = 2

G)x = 1

Explicação:

D) 2×(x-2) = 10

2x-4 = 10

2x = 10+4

2x = 14

x = 14÷2

x = 7

F)2×(x-1) = x

2x-2 = x

2x = x+2

2x-x = 2

x = 2

G)5+2×(1+x) = 9

5+2+2x = 9

2x = 9-5-2

2x = 4-2

2x = 2

x = 2÷2

x = 1