Question

equação do 1°grau 2x-2x=x+3
100+2x=-50
-4x+2=0
-3x+2=12
-8x+12=-10
10x+3x=5-2x
1/2+2x=-2/3

Answer 1

2x-2x=x+3 
2x-2x-x=3
-x=3  *(-1)
x=-3

100+2x=-50
2x=-50-100
2x=-150
x=-150/2
x=-75

-4x+2=0
-4x=-2
x=-2/-4
x=1/2

-3x+2=12
-3x=12-2
-3x=10   *(-1)
3x=-10
x=-10/3

-8x+12=-10
-8x=-10-12
-8x=-22
x=-22/-8
x=11/4

10x+3x=5-2x
10x+3x+2x=5
15x=5
x=5/15
x=1/3

1/2+2x=-2/3
2x=-2/3-1/2    mmc 6
12x=-4-3
12x=-7
x=-7/12

Answer 2

2x-2x=x+3
2x-2x-x=3
-x=3 ( -1 )
x=-3

100+2x=-50
2x=-50-100
2x=-150
x=-150÷2
x=-75

-4x+2=0
-4x=0-2
-4x=-2
4x=2
x=4÷2
x=2

-3x+2=12
-3x=12-2
-3x=10 ( -1 )
3x=-10
x=-10÷3
x=3.333...

-8x+12=-10
-8x=-10-12
-8x=-22 ( -1 )
8x=22
x=22÷8
x=2.75

10x+3x=5-2x
10x+3x+2x=5
15x=5
x=15÷5
x=3

1/2+2x=-2/3 MMC de 2 e 3 = 6
3+12x=-4
12x=-4-3
12x=-7
x=12÷7
x=24.285.714.286