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Simplifying x + 30 = 2x + 21 Reorder the terms: 30 + x = 2x + 21 Reorder the terms: 30 + x = 21 + 2x Solving 30 + x = 21 + 2x Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2x' to each side of the equation. 30 + x + -2x = 21 + 2x + -2x Combine like terms: x + -2x = -1x 30 + -1x = 21 + 2x + -2x Combine like terms: 2x + -2x = 0 30 + -1x = 21 + 0 30 + -1x = 21 Add '-30' to each side of the equation. 30 + -30 + -1x = 21 + -30 Combine like terms: 30 + -30 = 0 0 + -1x = 21 + -30 -1x = 21 + -30 Combine like terms: 21 + -30 = -9 -1x = -9 Divide each side by '-1'. x = 9 Simplifying x = 9
| 3/4n-942 | | 3d-1=5 | | -5t^2+25t-24=0 | | -160=8a-2 | | 922/100 | | 165-v=258 | | 3x+6+5x-12=360 | | 12a=28/.66 | | -1.5y=0 | | 4s-5=d | | 4w-15=41 | | 5t^2-25t+24=0 | | 1/10s=-33 | | 3x^2-12x+9=3.84 | | -2(4x+2)-(x+4)=10 | | -41=-6+5v | | 6-8x=6x-8x+0 | | -2(4x+2)-x+4=10 | | -5x+8=10 | | h(x)=16t^2+400 | | 5s=7s+1-2a | | 7zx-2=-2x-29 | | cos(x)=-0.70633031113 | | x+54=34 | | 4.3+(-7.2)= | | 3x^2+2x+4=90 | | -3x+12+4x=7+x+5 | | 4x+7x-38=57-8x | | 6z-4/2 | | http://www.algebralab.org/img/15f5c3b3-e14e-480c-85a2-76b3fd4c9cbb.gif | | 2/9=?/54 | | 5+4=2021 |
