what is 3 x-4+5x-4=12

Answer 1

The given equation is:
3x - 4 + 5x - 4 = 12

Combining like terms:
8x - 8 = 12

Adding 8 to both sides:
8x - 8 + 8 = 12 + 8
8x = 20

Dividing both sides by 8:
8x/8 = 20/8
x = 2.5

Therefore, the solution to the equation is x = 2.5.