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Simplifying 15 + (6 + -2X) = X Remove parenthesis around (6 + -2X) 15 + 6 + -2X = X Combine like terms: 15 + 6 = 21 21 + -2X = X Solving 21 + -2X = X Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-1X' to each side of the equation. 21 + -2X + -1X = X + -1X Combine like terms: -2X + -1X = -3X 21 + -3X = X + -1X Combine like terms: X + -1X = 0 21 + -3X = 0 Add '-21' to each side of the equation. 21 + -21 + -3X = 0 + -21 Combine like terms: 21 + -21 = 0 0 + -3X = 0 + -21 -3X = 0 + -21 Combine like terms: 0 + -21 = -21 -3X = -21 Divide each side by '-3'. X = 7 Simplifying X = 7
| 45=5n+5 | | 25=5n+5 | | 75-2x=16x+15 | | w(w+3)*28=3640 | | 9-9x=46-16x | | 9+8(2y+1)=2(3y+7)-1 | | 15-(6+2x)=x | | 5=-2(4+3m)-5(-m-1) | | -5-5x=7-77x | | t^3=5 | | 2x+4=4(x-3) | | 1=8x+18 | | 2x+4=4(x-12) | | 16j+22=18 | | 2(2x-7)+33=-7(x-5)+15x-20 | | 3.8p-2.4(4-6p)=13.3 | | 20-5r=r+2(1+6r) | | -4(8+5n)=20+6n | | 26e+891=71 | | 8g+18=14 | | -8+4(1-2b)=17-5b | | 3(x+4)=x+2 | | 5(4+x)=3(2+x) | | 8(14-(8(c+3)-5(c+3)))=-16c | | -8x-6(-2x-2)=3x+19 | | 2+3b=-1 | | -7=(-9.1) | | x^2+20x+104=0 | | 8x+x=70 | | 5(x+1.97)=4x | | 5x+3=2(x-9) | | p-(p+7)=5(p-5)+4p |