3x+5=20 x=5 since 5x3+5=20
x = 15
-3x + 5 = 20 -3x = 15 x = -5
In the equation 3x plus 7 equals 13, x is equal to 2.
8+7x = 20+3x 7x-3x = 20-8 4x = 12 x = 3
3x+5=20 x=5 since 5x3+5=20
x = 15
-3x + 5 = 20 -3x = 15 x = -5
In the equation 3x plus 7 equals 13, x is equal to 2.
8+7x = 20+3x 7x-3x = 20-8 4x = 12 x = 3
2x + 20 = 3x20 = 3X - 2X20 = X
3x + 8 = 20 3x = 20 - 8 3x = 12 3x = 12/3 x = 4
4x + 5 = 3x + 84x-3x + 5 - 5 = 3x - 3x + 8 -5x = 3
11x + 8 = 8x + 20 3x + 8 = 20 3x = 12 x = 4
7.5
-2x+20 = 3x 20 = 3x+2x 20 = 5x 4 = x So x = 4
3x + 8 = 2x +28 3x - 2x = 28 - 8 x=20