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Simplifying 4x + -3x + 7 = 28 Reorder the terms: 7 + 4x + -3x = 28 Combine like terms: 4x + -3x = 1x 7 + 1x = 28 Solving 7 + 1x = 28 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -7 + 1x = 28 + -7 Combine like terms: 7 + -7 = 0 0 + 1x = 28 + -7 1x = 28 + -7 Combine like terms: 28 + -7 = 21 1x = 21 Divide each side by '1'. x = 21 Simplifying x = 21
| f(24+100)=2200 | | v=t^2-2t | | f(25+100)=2200 | | 3x+6=5x-14 | | (2x+15)+1=180 | | 5(3-4)-7(2-5)/(-3) | | 4(y-1)=38 | | -4.9t^2+29.4t=0 | | f(23)=2090 | | 9x-13=-7+6x | | f(25)=2200 | | 77+-1x=71 | | 3(-4x-4)=-12+7x | | 8=24/x | | 16/x^2-16 | | -31z=-62 | | .42x+.81=1.85-.1x | | 54.15=18.95+3.2d | | 3x+33=45 | | 3(a^3x+1)=15 | | k^2-4k+1=-2 | | 4+4(6-3)=40 | | 54.15=18.95d | | 24+6u= | | 3y=9-6 | | 2X(-8-4)+27=-5X(8-7) | | 8x+x=24+x | | 27z^2+6z-16=0 | | ((20*25)+80)(5.5-25)+((100*25)-320)(25-5.5)=2200 | | 119+-7x=63 | | 7(8n-6)= | | lnx-lny=0 |