Question

Determine a solucao das equacões :

2x+3(x-2)=7x+34

1,8x-3(0,2x+1)=0,6(x-2)

Answer 1

Resposta:

2x+3(x-2)=7x+34

2x+3x-6=7x+34

5x-7x=34+6

(-2x=40). -1

2x=-40

x=-40/2

x=-20

1,8x-3(0,2x+1)=0,6(x-2)

1,8x-0,6x-3=0,6x-1,2

1,8x-0,6x-0,6x=-1,2+3

1,8x-1,2x=1,8

0,6x=1,8

x=1,8/0,6

x=3