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Simplifying 12x + 7 = 8x + 15 Reorder the terms: 7 + 12x = 8x + 15 Reorder the terms: 7 + 12x = 15 + 8x Solving 7 + 12x = 15 + 8x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8x' to each side of the equation. 7 + 12x + -8x = 15 + 8x + -8x Combine like terms: 12x + -8x = 4x 7 + 4x = 15 + 8x + -8x Combine like terms: 8x + -8x = 0 7 + 4x = 15 + 0 7 + 4x = 15 Add '-7' to each side of the equation. 7 + -7 + 4x = 15 + -7 Combine like terms: 7 + -7 = 0 0 + 4x = 15 + -7 4x = 15 + -7 Combine like terms: 15 + -7 = 8 4x = 8 Divide each side by '4'. x = 2 Simplifying x = 2
| 3(9+7d)=-16 | | 1-cosx-cosx+cos^2x= | | 3(4x+6)=-37+19 | | -30r=-5r+6r | | =(5x^2y^3)(-x^5y)(-2x^4y) | | 10x+7=3x+21 | | 12x-11y=88 | | 5(x-3)=3-4x | | 2(6n+5)+8n=170 | | 3r^3+12r^2+12r=0 | | 5x+3(3x+9)=111 | | 9x+29=3x+11 | | 25+12x=97 | | k/6+8=2 | | z^2+8x+15=0 | | 40+55x=700 | | -.5B+8=2B-8 | | 40+90x=310 | | 62=6x+2(2x+6) | | x+(x+1)-3x=-4 | | 50+32x=178 | | 2B-8=-2B+12 | | 75-9e=(-4+2e) | | 80+35x=225 | | 96+x+64+27=180 | | 9=6-(-5+2) | | (2x+3)(x)=560 | | 100+80x=500 | | 5+1x=11 | | 3y-(-26)=8-6y | | 7x^2+45x+68=0 | | (2x+3)(y)=560 |