Question

1) 3x+2=2x-11

2)2x-8=8

3)20=6x+32

4)6x-10=2x+14

5)6x-1=2x+14

Answer 1

1) 3x+2 = 2x-11

$3x -2x = -11 -2 \\\\ x = -13$

2) 2x-8 = 8

$2x = 8 + 8 \\\\ x = \frac{16}{2} = 8$

3) 20 = 6x+32

$-6x = 32 - 20 \\\\ -6x = 12 \\\\ x = - \frac{12}{6} = -2$

4) 6x-10 = 2x+14

$6x - 2x = 10 + 14 \\\\ 4x = 24 \\\\ x = \frac{24}{4} = 6$

5) 6x-1 = 2x+14

$6x - 2x = 14 + 1 \\\\4x = 15 \\\\ x = \frac{15}{4}$

Answer 2

1) 3x+2=2x-11
3x - 2x = - 11 - 2
x = - 13

S[- 13]



2)2x-8=8
2x = 8 + 8
2x = 16
x = 16/2
x = 8

S[8]


3)20=6x+32
- 6x = 32 - 20
- 6x = 12 .(-1)
6x = - 12
x = - 12/6
x = - 2

S[- 2]



4)6x-10=2x+14
6x - 2x = 14 + 10
4x = 24
x = 24/4
x = 6

S[6]


5)6x-1=2x+14
6x - 2x = 14 + 1
4x = 15
x = 15/4    ou 3,75

S[15/4  ou  3,75]