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Simplifying 3x + 12 = 7(x + 6) Reorder the terms: 12 + 3x = 7(x + 6) Reorder the terms: 12 + 3x = 7(6 + x) 12 + 3x = (6 * 7 + x * 7) 12 + 3x = (42 + 7x) Solving 12 + 3x = 42 + 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. 12 + 3x + -7x = 42 + 7x + -7x Combine like terms: 3x + -7x = -4x 12 + -4x = 42 + 7x + -7x Combine like terms: 7x + -7x = 0 12 + -4x = 42 + 0 12 + -4x = 42 Add '-12' to each side of the equation. 12 + -12 + -4x = 42 + -12 Combine like terms: 12 + -12 = 0 0 + -4x = 42 + -12 -4x = 42 + -12 Combine like terms: 42 + -12 = 30 -4x = 30 Divide each side by '-4'. x = -7.5 Simplifying x = -7.5
| 2/5x60 | | -18+n=21 | | 5X+9-2X=7X-5 | | -7/6=-3/4n | | 1-0.20y=1.5 | | x^2+2x-6=-3 | | (9w-8)(9w+8)= | | 300-.125q=100q | | y=-x^2+8x-18 | | x+10=16-0.5x | | 2x+-7+x=3x+1+2x | | 16v-3+36=4v-18 | | .75x=7.5+0.5x | | 16t+14k+8t= | | h(x)=(x^2-5x-36)/(x^2-81) | | (3/8)^4 | | 6(x+3)=3(x-5) | | sec^2x=4secx-4 | | 215+5m=25 | | 3+3+3+3+x+x+x+x=28 | | 2xsquared=128 | | 2y=-6/5 | | -2u^2-3u-1=0 | | -0.8x^2+12x+25.8= | | 3x-5(3x+10)=-134 | | p^4-3p^2-10=0 | | 7(x-2)=6x-8 | | 12(9x+16)= | | 0.5*x=cos(x) | | 7=2m+3 | | -x-7y=-21 | | 7=n-8 |