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Simplifying x(7x + -9) = (7x + 6)(x + -2) Reorder the terms: x(-9 + 7x) = (7x + 6)(x + -2) (-9 * x + 7x * x) = (7x + 6)(x + -2) (-9x + 7x2) = (7x + 6)(x + -2) Reorder the terms: -9x + 7x2 = (6 + 7x)(x + -2) Reorder the terms: -9x + 7x2 = (6 + 7x)(-2 + x) Multiply (6 + 7x) * (-2 + x) -9x + 7x2 = (6(-2 + x) + 7x * (-2 + x)) -9x + 7x2 = ((-2 * 6 + x * 6) + 7x * (-2 + x)) -9x + 7x2 = ((-12 + 6x) + 7x * (-2 + x)) -9x + 7x2 = (-12 + 6x + (-2 * 7x + x * 7x)) -9x + 7x2 = (-12 + 6x + (-14x + 7x2)) Combine like terms: 6x + -14x = -8x -9x + 7x2 = (-12 + -8x + 7x2) Add '-7x2' to each side of the equation. -9x + 7x2 + -7x2 = -12 + -8x + 7x2 + -7x2 Combine like terms: 7x2 + -7x2 = 0 -9x + 0 = -12 + -8x + 7x2 + -7x2 -9x = -12 + -8x + 7x2 + -7x2 Combine like terms: 7x2 + -7x2 = 0 -9x = -12 + -8x + 0 -9x = -12 + -8x Solving -9x = -12 + -8x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '8x' to each side of the equation. -9x + 8x = -12 + -8x + 8x Combine like terms: -9x + 8x = -1x -1x = -12 + -8x + 8x Combine like terms: -8x + 8x = 0 -1x = -12 + 0 -1x = -12 Divide each side by '-1'. x = 12 Simplifying x = 12
| 4y=22+2x | | 4x^3-12x^2+6=0 | | 2.2x=19.58 | | -6(-2y+3)=12y-14 | | 4y-17=39 | | -(-5x)=(-52) | | 3p^2=78 | | -5(x+4)=0 | | 13x-5= | | 6(y+8)-8y=34 | | a+30=(a/11)+60 | | -4(2z-1)=5(8-3z) | | x+24+2x=0-2x-6 | | 14-k=3(k-2) | | -9w+17+w=1-6w | | 19-6x=11+2x | | 9-2(5x+3)=10(x-5)-7 | | -5-28= | | 2x+13-4x=15-13x+11-2 | | 2(-1)-3=-15 | | x^2-8x-16=0 | | 10x+3y=11 | | -22+x=x+16 | | -4x+7=-5 | | -2x+3(5-x)=5 | | .3(5*16)13.9= | | -3+2x= | | 6(4z-1)-5(z+3)=2(z+1) | | (e/160000)=(e-224000)/80000 | | 10x^2+5x-5=0 | | 3(-3)+5= | | x=0.95b |