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Simplifying 3(x + 3) = 7(x + -1) + -4 Reorder the terms: 3(3 + x) = 7(x + -1) + -4 (3 * 3 + x * 3) = 7(x + -1) + -4 (9 + 3x) = 7(x + -1) + -4 Reorder the terms: 9 + 3x = 7(-1 + x) + -4 9 + 3x = (-1 * 7 + x * 7) + -4 9 + 3x = (-7 + 7x) + -4 Reorder the terms: 9 + 3x = -7 + -4 + 7x Combine like terms: -7 + -4 = -11 9 + 3x = -11 + 7x Solving 9 + 3x = -11 + 7x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7x' to each side of the equation. 9 + 3x + -7x = -11 + 7x + -7x Combine like terms: 3x + -7x = -4x 9 + -4x = -11 + 7x + -7x Combine like terms: 7x + -7x = 0 9 + -4x = -11 + 0 9 + -4x = -11 Add '-9' to each side of the equation. 9 + -9 + -4x = -11 + -9 Combine like terms: 9 + -9 = 0 0 + -4x = -11 + -9 -4x = -11 + -9 Combine like terms: -11 + -9 = -20 -4x = -20 Divide each side by '-4'. x = 5 Simplifying x = 5
| 117=r(39) | | 0.5x^2-x-5=-7 | | 6y^3+17y^2+5y= | | 13x-(5x-6)=38 | | 0.5x^2-x-5=-4 | | x^2+17x=348 | | 20=s-3 | | 2(4z+3)-9=69 | | 69=33-4(x-4) | | 10x^4-35x^3+30x= | | 13q-7=11q+19 | | 7y-13=4y+11 | | 40+x=18 | | 15y-10=11y+14 | | 3x+7-2x=9+2x-6 | | 5x+35=40-3x | | 0.5x^2-x-5=5 | | 8s-14=5s+4 | | 2x-4x+12=5x+26 | | 0.5x-x-5=5 | | x^2+4y=1880 | | 6x-1=5+4x | | 8s-14=5s+14 | | 3x+7x-2x=26+6 | | 13t-7=11t+11 | | 21(3)-5y=100 | | 17.72=3g+3.84 | | 8x^2+79x+35=0 | | 13+-7=11t+11 | | -25=7x/3-11 | | 4(y-4)=6y-32 | | 10s-9=4s+3 |