7x+7=28x 28x-7x=7 21x=7 x=3
7x = 4x - 93x = -9x = -3
7x - 3 = 3 Subtract 3 from both sides: 7x - 6 = 0 So a = 7 and b = -6
Subtract by 7x and divide by 2.
x=3
7x-3=39 7x=42 x=6
-7x - 2y = -3
If: 3x-3 = 7x+21 Then: x = -6
7x+7=28x 28x-7x=7 21x=7 x=3
7x = 4x - 93x = -9x = -3
7x + 5y 7(3) + 5(2) 21 + 10 = 31
7x - 3 = 3 Subtract 3 from both sides: 7x - 6 = 0 So a = 7 and b = -6
Subtract by 7x and divide by 2.
x=3
3/7x + 5 = 87x(3/7x + 5) = 8(7x)3(7x/7x) + (7x)(5) = 8(7x)3 + 35x = 56x3 + 35x - 35x = 56x - 35x3 = 21x3/21 = 21x/211/7 = x
7x + 8 = 11x + 3, solve for xsubtract 7x from both sides8 = 11x - 7x + 38 = 5x + 3subtract 3 from both sides5 = 5xdivide both sides by 51 = x.
2x+3=9x 3=9x-2x 3=7x x=3/7