Answer:
x = 20
Step-by-step explanation:
The goal is to move the x's and the whole numbers to their own sides of the equation. When moving pieces to opposite sides, the signs change (a negative becomes a positive, for example).
3x - 4 = 2(x + 8)
First we're going to use distributive property to remove the brackets in
2(x + 8)
This becomes 2x + 16
3x - 4 = 2x + 16
Moving 2x over...
3x - 2x - 4 = 16
Moving -4 over...
3x - 2x = 16 + 4
Collecting like terms...
x = 20
You lost 8 points the highest score would have been 80
Y=2x-4
X=2
X+2y=10
X+2x0=10
X+0=10 therefore, x=10