Question

Solve the equation 3x + 4 = 5x - 8​

Answer 1

Answer:

x = 6

Step-by-step explanation:

1. 3x + 4 = 5x - 8
2. 3x - 5x = - 4 - 8
3. - 2x = - 12
4. x = 6

Answer 2

Answer:

x = 6

Step-by-step explanation:

3x + 4 = 5x - 8

==> add 8 to both sides

in doing so we get 3x + 4 + 8 = 5x - 8 + 8

the -8 and the +8 cancels out and 4 + 8 = 12

we are left with 3x + 12 = 5x

==> subtract 3x from both sides

in doing so we get 3x - 3x + 12 = 5x - 3x

the 3x and -3x cancel out and 5x - 3x = 2x

we are left with 12 = 2x

==> divide both sides by 2

in doing so we get 12/2 which equals 6 and 2x/2x which leaves us with

6 = x