3x+11+5x=75(add 5x and 3x) 8x+11=75(-11) 8x=64(/ 8) x=8(ANSWER)
8x+2=6x+10 8x-6x=10-2 2x=8 x=4 Therefore, x=4.
x= -8
If: y = 8x+7 then the y intercept is 7 and the slope is 8
+ 1/8
-8x ----- 8
8 times 3 plus 32 equals 56. 8x + 32 = 56 8x + 32 - 32 = 56 - 32 8x = 24 8x / 8 = 24 / 8 x = 3
-8x + 6 = -58 -8x = -64 x= -64/-8 x = 8
Add the equations: 8x - y = 8 ie 8x - 8 = y so 5x - 5(8x - 8) = -30 which is 5x - 40x + 40 = -30 ie -35x = -70 making x = 2 and y = 8.
11x + 8 = 8x + 20 3x + 8 = 20 3x = 12 x = 4
x = 8
x=1
basic algebra -8x + 6 = -58 -8x = -64 x = (-64/-8) x = 8
8x-5y = -40 -5y = -8x-40 y = 1.6x+8 which is now in slope intercept form
x = -8
This slope is 8
8x = 5x+24 8x-5x = 24 3x = 24 x = 8