If: 2y-10 = 8
Then: y = 9
y = (3 X 8) - 5 = 21.
y=8 y = 2x y = 2(4) <-- substitute 4 for x y = 8 <-- this is your answer
x=-1.5
(y - 2)(2y + 5)
y = 8
8
If 6y-8 = 28 then y = 6
5y+8=7y 2y=8 y=4
y = 8
x = 8y = -42x - y = 2(8) - (-4) = 16 + 4 = 20
Depends what the expression is. Just plug in 8 for y in the expression and that'll do it for you.
x has been increased by times 1.625 So: 8*1.625 = 13 which is the value of y when x is 117