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Simplifying x + (x + -7) = 31 Reorder the terms: x + (-7 + x) = 31 Remove parenthesis around (-7 + x) x + -7 + x = 31 Reorder the terms: -7 + x + x = 31 Combine like terms: x + x = 2x -7 + 2x = 31 Solving -7 + 2x = 31 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + 2x = 31 + 7 Combine like terms: -7 + 7 = 0 0 + 2x = 31 + 7 2x = 31 + 7 Combine like terms: 31 + 7 = 38 2x = 38 Divide each side by '2'. x = 19 Simplifying x = 19
| x(x-7)=31 | | 9(4y-3)=9 | | (x^2+y^2)*dx-2*x*y*dy=0 | | 4x^3+12x^2-40x-96=0 | | 4x+x+10=25 | | 41x+31y=54 | | 4(y+3)+5(y-2)+3= | | -8(x+7)-9x=-5 | | 5x^2=2x^2-35x | | 8n-2+2n=6 | | y-8=9-35y | | n+8=12n+2 | | k-5=14k-1 | | x+x-3+x-3=48 | | ln(x)ln(x^2)+ln(x^3)=2 | | ln(x)ln(x^2)+ln(x^3)-2=0 | | ln(x)xln(x^2)+ln(x^3)-2=0 | | 6x+t=z | | -3a+10b-5a-3b= | | x^2-24y-8x+16=0 | | 2t-10+10=-4+10 | | c=AUB | | x+(4-5)+3x-(-3x-10)=14 | | ln(6-x^2)=0 | | 8x-10=10x+22 | | 1(x^2-4)=3(x+4x) | | 8x^2-115x+332=0 | | 5.23x-8.21y=-10.25 | | 180=120+x+2y | | -7times-11= | | -7x-11= | | (6x+7x)+-(2y-3y)+9=(6+7)x+(-2-3)y+9 |