Question

Me ajudem por favor preciso dos cálculos 
A) 2(x+)-(x-1)=0
B) 5(x+1)-3(x+2)=0
C)13+4(2x-1)=5(x+2)
D)4(x+5)+3(x+5)=21
E)2(x+5)-3(5-x)=10
F)8(x-1)=8-4(2x-3)

Answer 1

a) 2(x+)-(x-1)=0
2x+2-x+1=0
2x-x=-1-2
x=-3
b) 5(x+1)-3(x+2)=0
5x+5-3x-6=0
5x-3x=6-5
2x=1
x=1/2
c) 13+4(2x-1)=5(x+2)
13+8x-4=5x+10
8x-5x=10+4-13
3x=10-9
3x=1
x=1/3
d) 4(x+5)+3(x+5)=21
4x+20+3x+15=21
4x+3x=21-15-20
7x=21-35
7x=-14
x=-14/7
x=-2
e) 2(x+5)-3(5-x)=10
2x+10-15+3x=10
2x+3x=10+15-10
5x=10+5
5x=15
x=15/5
x=3
f) 8(x-1)=8-4(2x-3)
8x-8=8-8x+12
8x+8x=8+12+8
16x=28
x=28/16 (:4)
x=7/4