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Simplifying (7x + 6) + (4x + 12) = (12x + 9) Reorder the terms: (6 + 7x) + (4x + 12) = (12x + 9) Remove parenthesis around (6 + 7x) 6 + 7x + (4x + 12) = (12x + 9) Reorder the terms: 6 + 7x + (12 + 4x) = (12x + 9) Remove parenthesis around (12 + 4x) 6 + 7x + 12 + 4x = (12x + 9) Reorder the terms: 6 + 12 + 7x + 4x = (12x + 9) Combine like terms: 6 + 12 = 18 18 + 7x + 4x = (12x + 9) Combine like terms: 7x + 4x = 11x 18 + 11x = (12x + 9) Reorder the terms: 18 + 11x = (9 + 12x) Remove parenthesis around (9 + 12x) 18 + 11x = 9 + 12x Solving 18 + 11x = 9 + 12x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-12x' to each side of the equation. 18 + 11x + -12x = 9 + 12x + -12x Combine like terms: 11x + -12x = -1x 18 + -1x = 9 + 12x + -12x Combine like terms: 12x + -12x = 0 18 + -1x = 9 + 0 18 + -1x = 9 Add '-18' to each side of the equation. 18 + -18 + -1x = 9 + -18 Combine like terms: 18 + -18 = 0 0 + -1x = 9 + -18 -1x = 9 + -18 Combine like terms: 9 + -18 = -9 -1x = -9 Divide each side by '-1'. x = 9 Simplifying x = 9
| 450=2x^2 | | 8x=20+2x-4x | | f/4=5/80 | | 7x-1=7(x-8) | | 1.55=-3.1-0.62 | | 5(x+-3)+-3=5x+-6 | | 123=16x^2+6X+96 | | (-5b)-(6)=(-11)+2b | | 5a+6c=41 | | 14/6=21/m | | 1+x+5=x+5+1 | | 4(5x+5)=20x+20 | | 6(x+2)-4x=16 | | 6-5i/3-2i= | | 9x+3y=81 | | 10(2+x)=15x-15+5 | | -3y-4y= | | (5x+6)+(2x+16)=(8x+3) | | 0.14(y-1)+0.04y=0.08y-0.3 | | 90+-9=-243 | | 2(3.5x-4)=13 | | -5b-6=-11+2b | | 9-3b=10b+35 | | y+4=3(x-3) | | 3p+7=12-2p | | 8x+(59x-11)2=17x | | 2+x=73 | | (11x-3y)-(8x+4y)= | | 2m-8=-4+4m | | x=7.5(2) | | 5/14-1/3 | | 13.2k=40 |