Respostas
Resposta:Segue as contas abaixo na explicação
Explicação passo-a-passo:
a)2x-7=5x+1 b)4x+13=43-x c)2x-3=1-(3-3x)
2x-5x=1+7 4x-x=43-13 2x-3=1-3+3x
-3x=8 3x=30 2x-3=-2+3x
x=-8/3 x=30/3 2x-3x=-2+3
x=10 -x=1 (-1)
x=-1
d)x+2/3-2x-1/2=x+3 e)-3(x-1)+4=x/2-2
2x/6+4/6-6x/6-3/6=6x/6+18/6 -3x+3-4=x/2-2
2x+4-6x-3=6x+18 -6x/2-2/2=x/2-4/2
-4x+1=6x+18 -6x-2=x-4
-4x-6x=18-1 -6x-x=-4+2
-10x=17 -7x=-2 (-1)
x=-17/10 7x=2
x=2/7
f)3(x+6)-(-x+1)=5x+8 g)4x/5-x=-5
3x+18+x-1=5x+8 4x/5-5x/5=-25/5
4x+17=5x+8 4x-5x=-25
4x-5x=8-17 -x=-25 (-1)
-x=-9 (-1) x=25
x=9
h)5x-(-2x+3)=3x+7
5x+2x-3=3x+7
7x-3=3x+7
7x-3x=7+3
4x=10
x=10/4:2/2
x=5/2