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Simplifying 2x + (x + -9) = 90 Reorder the terms: 2x + (-9 + x) = 90 Remove parenthesis around (-9 + x) 2x + -9 + x = 90 Reorder the terms: -9 + 2x + x = 90 Combine like terms: 2x + x = 3x -9 + 3x = 90 Solving -9 + 3x = 90 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + 3x = 90 + 9 Combine like terms: -9 + 9 = 0 0 + 3x = 90 + 9 3x = 90 + 9 Combine like terms: 90 + 9 = 99 3x = 99 Divide each side by '3'. x = 33 Simplifying x = 33
| (X-9)+2x=90 | | 4x+34=90 | | .5x^2-5x=18 | | 14x=3x+44 | | (2x+5)+(5x+1)=90 | | (3/4)x+6=x-2 | | (n-2)180=135 | | 3x-38=10 | | 4x^2+12x^2-x-3=0 | | 40=-.40x+22 | | 23-d=2(d-9)-3(d+2) | | 3a^2-8ab-3b^2=0 | | x^3-8x^2-18x-20=0 | | -10c=80 | | [4x+1]+47=180 | | 2s-15=-50+9s | | [x-9]+126=180 | | 2t-26=-31+7t | | 7x=12x+4 | | t(n)=3n+2 | | 111+[x+14]=180 | | x+(30+3x)=90 | | [x-16]+[2x+1]=180 | | -5x+2x=-12x | | 1=18+14x | | X-16+2x+1=180 | | 4(-8c+5)=-32x-26 | | 3.6x+4.5x=5.67 | | X-9+142=180 | | 2x=7x+20 | | 0.5+8=15 | | 49x^2-42x-16=0 |