7x + y = 8 Subtract 7x from each side of the equation: y = -7x + 8
7x + 8 = 36 - 8 = - 8 -------------- 7x = 28 7x/7 = 28/7 x = 4
7x-5x=8 2x=8 x=4
Subtract 7x from each side: 8 = -9 Not possible, game over.
-8 + 7x = x - 506x = -42x = -6
4x+5=7x-8 the ansewr is 3.25
40 -7x = -16 -7x = -16 -40 -7x = -56 x = 8
9x-4 = 7x+8 9x-7x = 8+4 2x = 12 x = 6
7x + 8 = 36 Therefore, 7x = 28 x = 28/7 x = 4
7x-3=3x+8 7x-3x=8+3 4x=11 x=11/4=2.75
9x-8=7x-3 9x-7x=-3+8 2x=5 x=5/2 x=2.5
8+7x = 20+3x 7x-3x = 20-8 4x = 12 x = 3