9x2 - 28x + 20 = 9x2 - 18x - 10x + 20 = 9x(x - 2) - 10(x - 2) = (9x - 10)*(x - 2)
x - 10x = 9x, so 9x + 3 = 0, so 9x = -3 so x = -1/3
-10x+3 = -x+12 -10x+x = 12-3 -9x = 9 x = -1
0
If you mean 9x+x then it is 10x when simplified
x + 20 + 10x = 20 + 9x 11x + 20 = 20 + 9x Subtract 20 from both sides: 11x = 9x Subtract 9x from both sides: 2x = 0 Divide both sides by 2: x = 0
9x + 1x = 10x.
9x2 - 28x + 20 = 9x2 - 18x - 10x + 20 = 9x(x - 2) - 10(x - 2) = (9x - 10)*(x - 2)
x - 10x = 9x, so 9x + 3 = 0, so 9x = -3 so x = -1/3
-38-10x = 9x+19 -38-19 = 9x+10x -57 = 19x |: 19 -3 = x Therefore x equals -3
-10x+3 = -x+12 -10x+x = 12-3 -9x = 9 x = -1
10x = 9x -25 10x -9x = -25 x = -25
0
10x + (8-x) = -19 10x + 8 = x - 19 10x = x - 27 9x = 27 x = 3
-171 = 19x so x = -9
If you mean 9x+x then it is 10x when simplified
10x+3 < 9x-6 (subtract 9x from both sides to give..) if and only if x+3 < -6 (subtract 3 from both sides to give ..) if and only if x < -9