8x+9=9x-18+9 = 8x+9=9x-9 = 1x=0 (:
9x+18 = 180 9x = 180-18 9x = 162 x = 18
9x-5 = 13 Add 5 to both sides: 9x = 18 Divide both sides by 9: x = 2
use algebra and then factor... x= -9 and 9
9x - 8 = 46 9x = 46 +8 9x= 54 9x/9 = 54/9 x= 6
2x2 - 9x = 18 2x2 - 9x -18 = 0 (2x - 18)(x + 9) x= -9 and 9
8x+9=9x-18+9 = 8x+9=9x-9 = 1x=0 (:
9x + 9 - 1 = 9x + 8
27
9x+18 = 180 9x = 180-18 9x = 162 x = 18
180=11x+9x. 180 = 20x. 18=2x. 9=x.
9x-5 = 13 Add 5 to both sides: 9x = 18 Divide both sides by 9: x = 2
use algebra and then factor... x= -9 and 9
x2+9x+18 find factors of 18 that add up to 9, in this case 6&3 (x+6)(x+3)
1/9=x/18 18=9x 2=x
x^2 + 18 = 9x x^2 - 9x + 18 = 0 (x )(x ) Since 6 * 3 = 18 and 6 + 3 = 9, (x 3)(x 6) Since the 18 is positive, the factors are either both positive or both negative. Since the 9 is negative, they must both be negative. (x - 3)(x - 6)
what is the answer to -9x-3y=-9