3x+7=4x 7=4x-3x 7=x
3x+7=4x-73x=(-)7+4x-4x(-)1x=(-)7________(-)1x=7add (-3x) to each side of equation3x +7 = 4x-3x +3x +7 = 4x -3x0 +7= 1x7=x
2x + 5 = 7 - 4x ie 2x + 4x = 7 - 5 ie 6x = 2 x = one third.
Add 4x - 2 to each side: 5x = 5 x = 1
4x - 7 = -15 4x = -8 x = -2
4x plus 7 plus 3x equals 19 plus xx = 2
If: 5x = 4x+7 Then: 5x-4x = 7 And: x = 7
3x+7=4x 7=4x-3x 7=x
4x+7=9x+7 -5x=0 x=0
3x + 7 = -4x + 28 implies 7x + 7 = 28
4x+7-8x=17-4x+7=17-4x=10x = -5/2
= 3
4x + 7 = 6x -7 14=2x so x = 7 (plus a negative # is simply - that number)
If 4x + 7 = 3... then x must equal -1
4x - 7 = 2x + 15 4x = 2x +222x = 22x = 11
4x + 7 - 8x = 17-4x + 7 = 17-4x = 24x = -6
The math problem 4x plus 7 times 31 equals 8. This is taught in math.