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Simplifying -5x + -15 = 7x + 21 Reorder the terms: -15 + -5x = 7x + 21 Reorder the terms: -15 + -5x = 21 + 7x Solving -15 + -5x = 21 + 7x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7x' to each side of the equation. -15 + -5x + -7x = 21 + 7x + -7x Combine like terms: -5x + -7x = -12x -15 + -12x = 21 + 7x + -7x Combine like terms: 7x + -7x = 0 -15 + -12x = 21 + 0 -15 + -12x = 21 Add '15' to each side of the equation. -15 + 15 + -12x = 21 + 15 Combine like terms: -15 + 15 = 0 0 + -12x = 21 + 15 -12x = 21 + 15 Combine like terms: 21 + 15 = 36 -12x = 36 Divide each side by '-12'. x = -3 Simplifying x = -3
| 30=-5n+16+3n | | 4x=1-3y | | y=-8+21 | | -13r-35=-70-4r | | x(x-3)(2x+1)=0 | | 7(-3)-3(-3)=18 | | 8a-15=21+7a | | 8x-2(5-x)=2 | | y=-8x+82 | | 4x(x+7)=7x+49 | | 7y-3x=18 | | 4x-13y=14 | | 8x-12y=96 | | y=-x+23 | | 31/4+53/16 | | (3/2)x-4=16 | | 16(x-3)=-7-9 | | 7y-16-3y=39-6y+2 | | 1/8+3/4+1/8 | | 1/4+5/16+3/8 | | -4+5(x-2)=13x+5-8x | | (1/3)x=12 | | -16.4=3.6-5y | | 38=r+23 | | x=12y-158 | | 9h+7-6h=5h+9 | | 55+32+3x+18=180 | | -1.5x-1.5x-0.5x=-1 | | -1.5x-1.5x-0.5x=.1 | | 21-(x-5)=5x-2 | | 55+32+18=180 | | -1.5*x-0.5*x=-1 |