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Simplifying 7x + -2(x + 4) = 19 + 2(x + -3) Reorder the terms: 7x + -2(4 + x) = 19 + 2(x + -3) 7x + (4 * -2 + x * -2) = 19 + 2(x + -3) 7x + (-8 + -2x) = 19 + 2(x + -3) Reorder the terms: -8 + 7x + -2x = 19 + 2(x + -3) Combine like terms: 7x + -2x = 5x -8 + 5x = 19 + 2(x + -3) Reorder the terms: -8 + 5x = 19 + 2(-3 + x) -8 + 5x = 19 + (-3 * 2 + x * 2) -8 + 5x = 19 + (-6 + 2x) Combine like terms: 19 + -6 = 13 -8 + 5x = 13 + 2x Solving -8 + 5x = 13 + 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. -8 + 5x + -2x = 13 + 2x + -2x Combine like terms: 5x + -2x = 3x -8 + 3x = 13 + 2x + -2x Combine like terms: 2x + -2x = 0 -8 + 3x = 13 + 0 -8 + 3x = 13 Add '8' to each side of the equation. -8 + 8 + 3x = 13 + 8 Combine like terms: -8 + 8 = 0 0 + 3x = 13 + 8 3x = 13 + 8 Combine like terms: 13 + 8 = 21 3x = 21 Divide each side by '3'. x = 7 Simplifying x = 7
| 4y+99=107 | | x*2x=210 | | 6[3(x+6)-8(4-x)+0]=0 | | (x-30)+2x=90 | | -81=w^2+15 | | 17y/15.5 | | 14x=5(20+36) | | 10m-7-3m-5=6m-3m+2 | | 7x^4=1512x | | 13.125+2.5x+2.5x^2=100 | | Z/8-4=9 | | 5sinx=2cos^2x-4 | | 5/6=b-5/b | | 6-a=3a-6a | | 8m-13=57 | | 663.74=84.45x+13.3x^2 | | 15+z=4 | | -2(z-4)-4(3z-2)=-2-(6z-2) | | 5-8n=10forn | | 4(a+bi)(a+bi)+8(a+bi)(a-bi)-3=0 | | -32+12x=25+9x | | 100=13.125+2.5x+2.5x^2 | | -21=5-x | | y+4=17(x-1) | | 0.5(x+50)+0.7x=61 | | -2+4x=18+13x | | .5+.75=765 | | 0.2(3+2x)+1.5x=3.2 | | 32-6x=14-8x | | 171.78=.14x+3.78 | | 3(x-4)+5x=20 | | 3(2-k)=4k-8 |