8x = 2x + 15 6x = 15 x = 15/6 = 2.5
5X + 6 = 2X + 15 -2X -2X 3X + 6 = 15 -6 -6 3X = 15 ---- ----- 3 3 x = 5 im so smart.
2x-5y+15=0 -5y=-2x-15 y=(2/5)x+3
X = 180 - Y so 180 - Y = 2x + 4 and Y = 4x + 20 so 180 - 4x - 20 = 2x + 4 therefore 6x = 156 so x = 26 making Angle X = 56o and Angle Y = 124o
2x+3x = 5x
X=7
180=11x+9x. 180 = 20x. 18=2x. 9=x.
x2 + 2x - 15 = (x - 3)(x + 5)
2x + 8 + x = 2x + 15 simplify 2x to both sides since they have the same sign8 + x = 15 subtract 8 to both sidesx = 7
4x - 7 = 2x + 15 4x = 2x +222x = 22x = 11
x=4
x = 2
8x = 2x + 15 6x = 15 x = 15/6 = 2.5
5X + 6 = 2X + 15 -2X -2X 3X + 6 = 15 -6 -6 3X = 15 ---- ----- 3 3 x = 5 im so smart.
yes
-7 +2x = x + 8 2x - x = 7 + 8 x = 15
x = -5