2x+1 = 9 2x = 9-1 2x = 8 x = 4
5X + 6 = 2X + 15 -2X -2X 3X + 6 = 15 -6 -6 3X = 15 ---- ----- 3 3 x = 5 im so smart.
3x + 2x = 5x. 5x= (-4) X = (-4)/5 x= -0.8
2x + 12 y =36subtract 2x from both sides12y = 36 - 2xdivide both sides by 12y = (36 - 2x)/12
2x-5y+15=0 -5y=-2x-15 y=(2/5)x+3
Y=15/(2c+2x)
8x+39 = 2x-15 6x = -54 x = -9
2x+a=p 2x=p-a x=.5p-.5a
y= -2x
3
x + 6 = 2x - 9 Add 9 to both sides: x + 15 = 2x Subtract 1x from both sides: 15 = 1x or 15 = x
X=7
8
many solutions
x=35
(3,3)
2x + 2x + 146 + 26 = 172 4x + 172 = 172 4x = 0 x = 0