Question

2(7x+2)+12(x+1)=2

4(2x-3)=5(x+3)

4(x-1)-2(3x+4)=6

Answer 1

2 (7x+2) + 12 (x+1) =2
14x+4 + 12x+12 = 2
26x = 2-4-12
26x = -14
x = 13/7 (simplifica por 2)
....
4 (2x-3) = 5 (x+3)
8x-12 = 5x+15
3x = 27
x = 9 (por 3)
.....
4 (x-1) -2 (3x-4) = 6
4x-4 -6x+8 = 6
-2x = 6-8+4
-2x = 2
x = -1
:-D

Answer 2

1 -

$2(7x+2)+12(x+1)=2 \\ \\ 14x+4+12x+12=2 \\ \\ 14x+12x=2-12-4 \\ \\ 26x=-14 \\ \\ x=- \frac{7}{13 }$


2 -

$4(2x-3)=5(x+3) \\ \\ 8x-12=5x+15 \\ \\ 8x-5x=15+12 \\ \\ 3x=27 \\ \\ x=9$


3  -


$4(x-1)-2(3x+4)=6 \\ \\ 4x-4-6x-8=6 \\ \\ 4x-6x=6+4+8 \\ \\ -2x=18 \\ \\ x=-9$