Question

determine os valores de x nas equacoes do 1 grau abaixo a)5x+3=3x+17 b) 2•(4x-6)=(6x+32)÷2 c)4 (x÷3)-x=24+x d9x+75=35 e)7 (2x-3)+2 (x+1)-5 (x-9)=3x+10

Answer 1

A) 5x-3x=17-3
2x=14
x=7

B) 8x-12=6x+32/2
8x-12=2(3x+16)/2
8x-12=3x+16
8x-3x=16+12
5x=28
x=28/5

C) 4×1/3x-x=24+x
4/3x-x=24+x
1/3x=24+x
x=72+3x
x-3x=72
-2x=72
x=-36

D) 9x=35-75
9x=-40
x=-40/9

E) 14x-21+2x+2-5x+45=3x+10
11x+26=3x+10
8x=-16
x=-2