Question

me ajudem a fazer essas contas
a) 3.(x+2)-1=13
b)5.(1-2y)+3.(1+y)=6
c)2-(x+1)-(3x+2)=0
d)1-(4-2)-2.(y-1)=10
f)5+2.(2x-3)=3.(x+1)
g)6-2.(-3x-1)=3.(2+7)
h)1+x+x+x=6.(x+7)
i)7+3.(6+y)-2y=3.(y-2)
j)-(x+1)+2.(x-2)=5x

Answer 1

3.(x+2)-1=13
3x+6-1=13
3x=13-6+1
3x=8
x=8/3


5.(1-2y)+3.(1+y)=6
5-10y+3+3y=6
10y+3y=6-5-3
13y=-2
y=-2/13


2-(x+1)-(3x+2)=0
2-x+1-3x+2=0
-x-3x=0-2-1-2
-4x=-5
x=-5/-4



1-(4-2)-2.(y-1)=10
1-2-2y-2=10
2y=10-1+2+2
2y=13
y=13/2



5+2.(2x-3)=3.(x+1)
5+4x-6=3x+3
4x-3x=3-5+6
1x=4
x=4/1


6-2.(-3x-1)=3.(2+7)
6+6x-2=6+21
6x=6+21-6+2
6x=23
x=23/6



1+x+x+x=6.(x+7)
1+x+x+x=6x+42
3x-6x=42-1
-3x=41
x=41/-3



7+3.(6+y)-2y=3.(y-2)
7+18+3y-2y=3y-6
-3y+3y-2y=-6-7-18
-2y=-31
y=-31/-2




-(x+1)+2.(x-2)=5x
-x+1+2x-4=5x
-x+2x-5x=-1+4
-4x=3
x=3/-4

espero ter ajudado