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Simplifying 3(5n + -5) + -4(3n + 4) = 100 Reorder the terms: 3(-5 + 5n) + -4(3n + 4) = 100 (-5 * 3 + 5n * 3) + -4(3n + 4) = 100 (-15 + 15n) + -4(3n + 4) = 100 Reorder the terms: -15 + 15n + -4(4 + 3n) = 100 -15 + 15n + (4 * -4 + 3n * -4) = 100 -15 + 15n + (-16 + -12n) = 100 Reorder the terms: -15 + -16 + 15n + -12n = 100 Combine like terms: -15 + -16 = -31 -31 + 15n + -12n = 100 Combine like terms: 15n + -12n = 3n -31 + 3n = 100 Solving -31 + 3n = 100 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '31' to each side of the equation. -31 + 31 + 3n = 100 + 31 Combine like terms: -31 + 31 = 0 0 + 3n = 100 + 31 3n = 100 + 31 Combine like terms: 100 + 31 = 131 3n = 131 Divide each side by '3'. n = 43.66666667 Simplifying n = 43.66666667
| 2(3n+5n)+3(4n+5)=15 | | 3*2-3(4-6)= | | 6n-12=100 | | -2*3+6(-4)= | | 5n+9=12 | | 8-6(2+4)= | | 4/7*21 | | (2+3)4= | | x^2+5x=42 | | 2[5-3(x+1)]=25+x | | x^2+y^2+2x-2y=0 | | x^2+y^2+2x-2y=11 | | -5(x+3)=7x+5 | | 2.899x=2.33x+100 | | 36m*60m= | | .5x=100+.1x | | 1/x-6/x^2=2/x^2 | | 1/2-6/x^2=2/x^2 | | 14=3x^2-19x | | x^4-2x^2-x=0 | | -16(x-4)=832 | | kx^2+2x+k=0 | | 8x-8=-16x | | 7+y=5y+39 | | -2x-5/94/3x-6 | | 1/3x-3/84 | | 5p-10=2p-25 | | 6h+h=35 | | 5/2(x-6)=5/4x-7/12 | | (2w+5x)(6w-7x-6)= | | 3r+7+5r=23 | | 8=3x-6 |