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Simplifying 7(1 + -1x) = 8(1 + 2x) + 4 (1 * 7 + -1x * 7) = 8(1 + 2x) + 4 (7 + -7x) = 8(1 + 2x) + 4 7 + -7x = (1 * 8 + 2x * 8) + 4 7 + -7x = (8 + 16x) + 4 Reorder the terms: 7 + -7x = 8 + 4 + 16x Combine like terms: 8 + 4 = 12 7 + -7x = 12 + 16x Solving 7 + -7x = 12 + 16x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-16x' to each side of the equation. 7 + -7x + -16x = 12 + 16x + -16x Combine like terms: -7x + -16x = -23x 7 + -23x = 12 + 16x + -16x Combine like terms: 16x + -16x = 0 7 + -23x = 12 + 0 7 + -23x = 12 Add '-7' to each side of the equation. 7 + -7 + -23x = 12 + -7 Combine like terms: 7 + -7 = 0 0 + -23x = 12 + -7 -23x = 12 + -7 Combine like terms: 12 + -7 = 5 -23x = 5 Divide each side by '-23'. x = -0.2173913043 Simplifying x = -0.2173913043
| 5u+2=7 | | 3x^2-39=0 | | 3n^2-2n=5 | | 2m(7m-15)=36 | | -3z=93 | | (5w-4)(6w-6)=0 | | 66=-11y | | 66=11y | | 80x+900=70x+4200 | | 14=14c | | 2n(7-15)=36 | | -5b=-20 | | 15V*4.5w=amps | | y=42(1.05)x | | 7a=56 | | y=70(1.1)x | | 0=-4x^2+17x-15 | | 8x=84 | | 8k-45=35 | | 8x=36 | | (4x-2)+8= | | 20+(-7+2x)-(-3x-7)= | | 3n^2-2n+1=6 | | (10b+4)+(6-9b)-(3b-7)= | | -5(z+1)+4(3z-5)=6(x-5)+10 | | 10n+4=11 | | 9m^2-30+25=0 | | 18-19x=-5(7x+2)-5(-3-3x) | | 10h+9+h-10= | | 3a+4c+9c-7b-7a-15c= | | 52+-9=41 | | 2m(7-15)=36 |