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Simplifying (2x + 9) + (4x + -15) = 90 Reorder the terms: (9 + 2x) + (4x + -15) = 90 Remove parenthesis around (9 + 2x) 9 + 2x + (4x + -15) = 90 Reorder the terms: 9 + 2x + (-15 + 4x) = 90 Remove parenthesis around (-15 + 4x) 9 + 2x + -15 + 4x = 90 Reorder the terms: 9 + -15 + 2x + 4x = 90 Combine like terms: 9 + -15 = -6 -6 + 2x + 4x = 90 Combine like terms: 2x + 4x = 6x -6 + 6x = 90 Solving -6 + 6x = 90 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '6' to each side of the equation. -6 + 6 + 6x = 90 + 6 Combine like terms: -6 + 6 = 0 0 + 6x = 90 + 6 6x = 90 + 6 Combine like terms: 90 + 6 = 96 6x = 96 Divide each side by '6'. x = 16 Simplifying x = 16
| -3x^2+9x+120=0 | | 7(2+3x)=-91 | | 1-3m=-5-m-4m | | 8x^2-5x+2.5=0 | | -7(2-2x)=-14 | | x+10-7x=12-6x-2 | | b/9-12=18 | | 8d-6d-8=2d | | -7(8-6x)=-56 | | 0.2(6x-3)=0.4(x-2)+0.2 | | (2b+c)(3b+2c)=0 | | X+x^2/2+2x^2-x | | -x+20=-2x-25 | | -3(-7x+5)=153 | | 9=6+2(x+1) | | 30=5(x*5)*2 | | N+8=-11+n+5+2n | | 10x+14=8x+9 | | .09x+x=2876.51 | | 6(4+2x)=-108 | | 10x+30(x-3)=150 | | rx+r=-2r+1 | | 9.1=3.2y-2.5(3.2-y) | | 30=x+2(x*5) | | 6x+6=8x-4 | | -2=x^2-3x+7 | | 2(r+x)=r-rx-6 | | y/8+19=28 | | 188=(x*3)+x | | 9=x*2+x | | -6a+7a=-16+3a | | y/10+4=16 |