By definition: 4x-10 = 5-x 4x+x = 5+10 5x = 15 x = 3 and y = 2
You fill in for x and solve the equation3(5)^2 - 2(5)15^2 - 10; now solve
In order to solve for X, or find out what X equals, you need to get the X alone on one side of the equation. In this case, first you subtract the Y so that the equation becomes 5x=10-y. Then you divide both sides by 5. Now the equation is X=(10-y)/5 (or X equals the quantity of 10-y over 5).
x = 5
x - 13 = 5 x = 18
1566 = x
Divide both sides by -5 x = -2