Resolva as equações
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Soluções para a tarefa
a)4x-1=3.(x-1)
4x-1=3x-3
4x-3x=-3+1
x=-2
b)3.(x-2)=2x-4
3x-6=2x-4
3x-2x=-4+6
x=2
c)2.(x-1)=3x+4
2x-2= 3x+4
2x-3x=4+2
-1x= 6
x=6/-1
x=-6
d)3.(x-1)-7=15
3x-3-7=15
3x=15+3+7
3x=25
x=25/3
e)7(x-4)=2x-3
7x-28=2x-3
7x-2x=-3+28
5x=25
x=25/5
x=5
f)3.(x-2)=4.(3-x)
3x-6=12-4x
3x+4x=12+6
7x=18
x=18/7
g)3.(3x-1)=2.(3x+2)
9x-3=6x+4
9x-6c=4+3
3x=7
x=7/3
h)7.(x-2)=5.(x+3)
7x-14=5x+15
7x-5x=15+14
2x=29
x=29/2
x=14,5
i)3.(2x-1)=-2.(x+3)
6x-3=-2x-6
6x+2x=-6+3
8x=-3
x=-3/8
j)5x-9.(x-2)=15
5x-9x+18=15
5x-9x=15-18
-4x=-3
x=3/4
k)2x+3x+9=8.(6-x)
2x+3x+9=48-8x
2x+3+8x=48-9
13x=39
x=39/3
x=3
l)4.(x+10)-2.(x-5)=0
4x+40-2x+10=0
4x-2x=-40-10
2x=-50
x=-50/2
x=-25
m)3.(2x+3)-4.(x-1)=3
6x+9-4x+4=3
6x-4x=3-9-4
2x=-10
x=-5
n)7.(x-1)-2.(x-5)=x-5
7x-7-2x+10=x-5
7x-2x-x=-5+7-10
7x-3x=2-10
4x=-8
x=-8/4
x=-2
o)2.(3-x)=3.(x-4)+15
6-2x=3x-12+15
6+12-15=3x+2x
5x=3
x=3/5
p)3.(5-x)-3.(1-2x)=42
15-3x-3+6x=42
-3x+6x=42-15+3
3x=30
x=30/3
x=10
q)(4x+6)-2x=(x-6)+10+14
4x+6-2x=x-6+10+14
4x-x-2x=-6+10+14-6
x=12