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Simplifying -8(u + 2) = -3u + -21 Reorder the terms: -8(2 + u) = -3u + -21 (2 * -8 + u * -8) = -3u + -21 (-16 + -8u) = -3u + -21 Reorder the terms: -16 + -8u = -21 + -3u Solving -16 + -8u = -21 + -3u Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '3u' to each side of the equation. -16 + -8u + 3u = -21 + -3u + 3u Combine like terms: -8u + 3u = -5u -16 + -5u = -21 + -3u + 3u Combine like terms: -3u + 3u = 0 -16 + -5u = -21 + 0 -16 + -5u = -21 Add '16' to each side of the equation. -16 + 16 + -5u = -21 + 16 Combine like terms: -16 + 16 = 0 0 + -5u = -21 + 16 -5u = -21 + 16 Combine like terms: -21 + 16 = -5 -5u = -5 Divide each side by '-5'. u = 1 Simplifying u = 1
| -2u+22=-4(u-2) | | 22=8(y-6)+2y | | (x+3y)(2x^3+3y)= | | 32=-4u+7(u+2) | | 7(v-6)+7v=14 | | 6=3x-2x | | 0.80x+0.05(16-x)=0.10(-52) | | 8/9×1/4 | | 0.80x+0.05(8-x)=0.10(-101) | | (8x-24)/(2x-x-15) | | -y+255=162 | | 160=-u+100 | | (6x-8)/8=-4 | | 0.32(12)+0.05x=0.15(18+x) | | cos^2(x)=1/9 | | 49=6u+u | | 3x-(9-2x)=51(3x) | | 6x+14=5x-4 | | 6+2+3=509 | | 3+4+5=225 | | (5x+9)(x+5)=0 | | 3x-2=29.7 | | 15x=215 | | Cos=0.432 | | y-4=2(5y-20) | | (3/16)=d-(5/16) | | 20t+4.9t^2=100 | | -46+i=5 | | 3(5t-4)+t=40-t | | 25x=77 | | -1x-3/5=13/5 | | Sinx=0.432 |