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Simplifying -3(x + 5) = 9(x + -7) Reorder the terms: -3(5 + x) = 9(x + -7) (5 * -3 + x * -3) = 9(x + -7) (-15 + -3x) = 9(x + -7) Reorder the terms: -15 + -3x = 9(-7 + x) -15 + -3x = (-7 * 9 + x * 9) -15 + -3x = (-63 + 9x) Solving -15 + -3x = -63 + 9x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-9x' to each side of the equation. -15 + -3x + -9x = -63 + 9x + -9x Combine like terms: -3x + -9x = -12x -15 + -12x = -63 + 9x + -9x Combine like terms: 9x + -9x = 0 -15 + -12x = -63 + 0 -15 + -12x = -63 Add '15' to each side of the equation. -15 + 15 + -12x = -63 + 15 Combine like terms: -15 + 15 = 0 0 + -12x = -63 + 15 -12x = -63 + 15 Combine like terms: -63 + 15 = -48 -12x = -48 Divide each side by '-12'. x = 4 Simplifying x = 4
| x+10.2=12.5 | | 6x+6+6x+16=130 | | 14x-7x^2= | | 15x^2+80= | | y=-2x(2)+16x-16 | | 4.9=5.5-0.2x | | b-7+4b=34 | | 24x-6x^2= | | 14=7x+5-4x | | 23=-4x+3 | | 35+x=19 | | 90=2x+7+21 | | 1z+2z+3z=0 | | Y*-2y+x-3=0 | | 65+8x+1= | | 3x+2(3x+2)=9x-7-3x | | 25=8x+1-5x | | 90=x+48 | | 5.5=7.6-0.3x | | -3-5x= | | 4.6=6.4-0.9x | | 70-4k=0 | | 2[5x+8-10]=4(2x-6) | | -3*48= | | 4y+9=5 | | -36+84= | | 3k(x-2)+k-2x=3k+2 | | -3*-28= | | 10a+10b+10c-109= | | -3+-28= | | 7x-5-9x=12 | | 0.6x+10.2=12 |