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Simplifying 2x + 4 + -1x + -7 = 3(x + -7) Reorder the terms: 4 + -7 + 2x + -1x = 3(x + -7) Combine like terms: 4 + -7 = -3 -3 + 2x + -1x = 3(x + -7) Combine like terms: 2x + -1x = 1x -3 + 1x = 3(x + -7) Reorder the terms: -3 + 1x = 3(-7 + x) -3 + 1x = (-7 * 3 + x * 3) -3 + 1x = (-21 + 3x) Solving -3 + 1x = -21 + 3x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3x' to each side of the equation. -3 + 1x + -3x = -21 + 3x + -3x Combine like terms: 1x + -3x = -2x -3 + -2x = -21 + 3x + -3x Combine like terms: 3x + -3x = 0 -3 + -2x = -21 + 0 -3 + -2x = -21 Add '3' to each side of the equation. -3 + 3 + -2x = -21 + 3 Combine like terms: -3 + 3 = 0 0 + -2x = -21 + 3 -2x = -21 + 3 Combine like terms: -21 + 3 = -18 -2x = -18 Divide each side by '-2'. x = 9 Simplifying x = 9
| X+-6x+16=-5 | | X+-6+16=-5 | | -2x+4+x-7=3(x-7) | | 5=-8+b | | 3[12-8x]=x-11x | | http://www.mathsonline.com.au/assets/interactives/images/3248-101-2.png | | 2/3*9/10 | | 30/x-5=-3 | | -7/18z | | (3x+2)2=32 | | 7m+12= | | 9[x+3]=4x-3 | | 13x^2+16y^2=1 | | -10=-4.9t^2+20t | | 4x-18=2x+36 | | -3-v=-5 | | Y=2/3*-2 | | 4[5n-7]=10n+2 | | (360-x)/x=40 | | 18-2/315 | | -3x11/3 | | Re=3m+3v | | -3*11/3 | | -3*11/3x | | 5sin(5x)=2 | | -16v-11=293 | | 8x+18+c=180 | | -3x11/3-3x | | 12+4a=2(12+4a) | | 2p-5=47 | | 2x-3(11/3-3x)=9 | | -4-20a=216 |
