7x+7=28x 28x-7x=7 21x=7 x=3
5x - 3 + 2x + 7 = ?7x + 5 = ?
x=(-9/7) 7x+12=3 7x=(-9) x=(-9/7)
-8 + 7(6x) + 3 = -7x - 5 - 1-8 + 42x + 3 = -7x - 5 - 142x - 8 + 3 = -7x - 5 + (-1)42x - 5 = - 7x - 642x + 7x - 5 + 5 = - 7x + 7x - 6 + 549x = -149x/49 = -1/49x = -1/49
7x + 2 = -4 7x + 2 - 2 = -4 - 2 7x = -6 7x/7 = -6/7 x = -6/7
7 plus 7x--2x plus 3 is: 7 + 7x + 2x + 3 = 0 9x + 10 = 0 9x = -10 x = -10/9 = -1 1/9
7x+7=28x 28x-7x=7 21x=7 x=3
7x + y + 3 = y7x + 3 = 07x = -3x = -3/7
7x+3=10 7x=7 {subtract 3 from each side} x=1 {divide each side by 7}
7x = 3 x = 3/7
5x - 3 + 2x + 7 = ?7x + 5 = ?
x=(-9/7) 7x+12=3 7x=(-9) x=(-9/7)
-8 + 7(6x) + 3 = -7x - 5 - 1-8 + 42x + 3 = -7x - 5 - 142x - 8 + 3 = -7x - 5 + (-1)42x - 5 = - 7x - 642x + 7x - 5 + 5 = - 7x + 7x - 6 + 549x = -149x/49 = -1/49x = -1/49
7x + 2 = -4 7x + 2 - 2 = -4 - 2 7x = -6 7x/7 = -6/7 x = -6/7
(3x - 1) + 7 = (7x - 2x) + x3x - 1 + 7 = 7x - 2x + x3x + 6 = 6x6 = 3xx = 6/3 = 2
7x + 7 = 7(x + 1)
In 7x+7, x is a variable.