If: 4x = x+15 Then: x = 5
x+15=16x=16-15x=1
x=2 1/7
x2 + 2x - 15 = 0(x + 5) (x - 3) = 0x = -5x = +3
x-y = 6 -x-3y = 22 -4y = 28 y = -7 So by substituting: x = -1 and y = -7
x = 13
2x + 15 = 8x + 43 -6x = 28 x = -6 / 28 = -3 / 14
3x + 7 = -4x + 28 implies 7x + 7 = 28
The problem can be written as:46-3+7x-15 = 4243+7x-15=427x + (43-15) = 427x + 28 = 427x = 42 - 287x = 14x = 14/7 = 2
28
find x+x+x when x=15 15+15+15=45
1over3x+x+x+8+x=15
x=5
If 40 plus x equals 25 then x is equal to -15.
x = 15
7+x=15 x=8
If: x+10 = 15 then x = 5