Question

com as contas pfv me ajudem

Answer 1

A)4(x+1)=12
4x+4=12
4x=12-4
4x=8
x=8÷4
x=2

B)5(3-x)-4x=18
15-5x-4x=18
5x-4x=18-15
x=3


C)9x-3(2x+2)=15
9x-6x-6=15
9x-6x=15+6
3x=9
x=9÷3
x=3

D)2,5(x-2)-1,5x=1
2,5x-5-1,5x=1
2,5x-1,5x=1+5
x=6

E)3,5x+8=2(x+7)
3,5x+8=2x+14
3,5x-2x=14-8
1,5x=6
x=6÷1,5
x=4

F)6(3x+2)-8=-2
18x+12-8=-2
18x=-2-12+8
18x=-14+8
18x=-22
x=22÷18(simpifica por 2)
x=11÷9

espero ter ajudado
;)