A) 2x+6=x+18
b) 5x-3=2x+9
c) 3 (2x-3)+2 (x+1)=3x+18
d)2x+3 (x-5)=4x+9
e) 2(x+1)-3 (2x-5)=6x-3
f)3x-5=x-2
g)3x-5=13
h) 3x+5=2
i)x-(2x-1)=23
j) 2x-(x-1)=5-(x-3)
b) 5x-3=2x+9
c) 3 (2x-3)+2 (x+1)=3x+18
d)2x+3 (x-5)=4x+9
e) 2(x+1)-3 (2x-5)=6x-3
f)3x-5=x-2
g)3x-5=13
h) 3x+5=2
i)x-(2x-1)=23
j) 2x-(x-1)=5-(x-3)
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Olá,Vamos lá,
A) 2x+6=x+18
2x-x=18-6
x =12
b) 5x-3=2x+9
5x-2x=9+3
3x=12
x=12/3
x=4
c) 3 (2x-3)+2 (x+1)=3x+18
6x-9+2x+2=3x+18
6x+2x-3x=18+9-2
5x= 25
x=25/5
x=5
d)2x+3 (x-5)=4x+9
2x+3x-15=4x+9
2x+3x-4x=9+15
x=24
e) 2(x+1)-3 (2x-5)=6x-3
2x+2-6x+15=6x-3
2x-6x-6x=-3-2-15
-10x=-20
x=-20/-10
x=2
f)3x-5=x-2
3x-x=-2+5
2x=3
x=3/2
g)3x-5=13
3x=13+5
3x=18
x=18/3
x=6
h) 3x+5=2
3x=2-5
3x=-3
x=-3/3
x=-1
i)x-(2x-1)=23
x-2x+1=23
-x= 23-1
-x=22 *(-1)
x=-22
j) 2x-(x-1)=5-(x-3)
2x-x+1=5-x+3
2x-x+x=5+3-1
2x=7
x=7/2