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Simplifying 1.25(8d + -16 + 4d) + -15 + -1d + 21 = 0 Reorder the terms: 1.25(-16 + 8d + 4d) + -15 + -1d + 21 = 0 Combine like terms: 8d + 4d = 12d 1.25(-16 + 12d) + -15 + -1d + 21 = 0 (-16 * 1.25 + 12d * 1.25) + -15 + -1d + 21 = 0 (-20 + 15d) + -15 + -1d + 21 = 0 Reorder the terms: -20 + -15 + 21 + 15d + -1d = 0 Combine like terms: -20 + -15 = -35 -35 + 21 + 15d + -1d = 0 Combine like terms: -35 + 21 = -14 -14 + 15d + -1d = 0 Combine like terms: 15d + -1d = 14d -14 + 14d = 0 Solving -14 + 14d = 0 Solving for variable 'd'. Move all terms containing d to the left, all other terms to the right. Add '14' to each side of the equation. -14 + 14 + 14d = 0 + 14 Combine like terms: -14 + 14 = 0 0 + 14d = 0 + 14 14d = 0 + 14 Combine like terms: 0 + 14 = 14 14d = 14 Divide each side by '14'. d = 1 Simplifying d = 1
| 121+52=155 | | 9x=11a | | 4y-15=4(9)-15 | | 5n^3-4n^2+25n-20=0 | | 15-3(2x+6)=25+4x | | 2/a-7=5/2a=5 | | 41.2+-47.5=x | | (-4-3x)(-4+3x)=0 | | -57+2x=-3x+73 | | -5=-2+v | | 25s+50+15r=255 | | n(x)=x^2-7x+8 | | 12/3x42/5 | | x+-34.4=-4 | | -5.5x+0.58=-3.82 | | (m+25)=4(m-0.5) | | -38x=0 | | -38=0 | | -9+15p=-5+5p | | 13.9+x=-29.7 | | K(x)=-0.5x^2+5x-3 | | -9-4x+5=3-1 | | 36q+30+29x=98 | | 2(x+3)-7x=18-5(5x+4) | | 0.05+10y=3.60 | | x(x+6)=2880 | | 22d+16=95 | | c+v=31.50 | | 8.5x+15=9.5x+5 | | 8(3x-2)+2-x+2x+4=5x+3+2(3*10)+4x+7 | | Y=3x-12x-15 | | 3c+4.25v=31.50 |