3x+7=15
-7 -7
3x=6
(Divide)
3 3
x=2
Check it:
3(2)+7=15
6+7=15
15=15
:D
x = -11
y = 15 (by transitivity)
x = 15
10 -3x+8x = 25 -3x+8x = 25-10 5x = 15 x = 3
3x+12x = 15 15x = 15 x = 1
x = -11
no
y = 15 (by transitivity)
x = 15
10 -3x+8x = 25 -3x+8x = 25-10 5x = 15 x = 3
3x+12x = 15 15x = 15 x = 1
x+5 = 3x+15 x-3x = 15-5 -2x = 10 x = -5
In the equation 3x plus 7 equals 13, x is equal to 2.
x=5
4x+7-3x = 15 4x-3x = 15-7 x = 8
4x + 5 = 3x + 84x-3x + 5 - 5 = 3x - 3x + 8 -5x = 3
3x - 5 + 3x = 1x + 15 3x + 3x -1x = 15 + 5 5x = 20 5x/5 = 20/5 x = 4