Question

por favor

2x-4-8=4x

3x=x+1+7​

Answer 1

Letra A

2x-4-8= 4x

2x-12= 4x

2x-4x=12

-2x= 12

2x= -12

x= -12/2

x=-6

Letra B

3x=x+1+7

3x-x=1+7

2x=8

x=8/2

x=4

Answer 2

$3x = x + 1 + 7 \\ 3x - x = 1 + 7 \\ 2x = 8 \\ x = 4 \\ \\ \\ \ \\ 2x - 4 - 8 = 4x \\ 2x - 4x = 4 + 8 \\ - 2x = 12 \times ( - 1) \\ 2x = - 12 \\ x = - 6$