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Simplifying 5(-2n + -9) = 18 + -12(4 + n) Reorder the terms: 5(-9 + -2n) = 18 + -12(4 + n) (-9 * 5 + -2n * 5) = 18 + -12(4 + n) (-45 + -10n) = 18 + -12(4 + n) -45 + -10n = 18 + (4 * -12 + n * -12) -45 + -10n = 18 + (-48 + -12n) Combine like terms: 18 + -48 = -30 -45 + -10n = -30 + -12n Solving -45 + -10n = -30 + -12n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '12n' to each side of the equation. -45 + -10n + 12n = -30 + -12n + 12n Combine like terms: -10n + 12n = 2n -45 + 2n = -30 + -12n + 12n Combine like terms: -12n + 12n = 0 -45 + 2n = -30 + 0 -45 + 2n = -30 Add '45' to each side of the equation. -45 + 45 + 2n = -30 + 45 Combine like terms: -45 + 45 = 0 0 + 2n = -30 + 45 2n = -30 + 45 Combine like terms: -30 + 45 = 15 2n = 15 Divide each side by '2'. n = 7.5 Simplifying n = 7.5
| -2x-6×1/4x-3 | | 15x^2-138x+144=0 | | 2n^2+12+36=20 | | 9x^2+8x-6=3x+8x^2 | | 4x(x+1)(x-2)+5(x-2)=28(x+1) | | https://www.schoology.com/system/files/attachments/page_embeds/m/2012-11/11_5.JPG | | 6.4/9.2 | | 2(3x-4)-10=15+3(2x+1) | | -2n+6(-8-9n)= | | -9n-45=-30 | | y^2-2y+1+x^2=0 | | 7(1+3z)=-17 | | 8=16+8t | | -8(4+6y)-5y= | | x^2-2x+1+y^2=0 | | 45*125= | | -5.3(-3.1+2w)= | | 2n^2+12n+9=-7 | | 3c-17(12c+6)= | | 45*139= | | 45*140= | | f(x)=10x-8 | | 45*142= | | 45*144= | | m^2-8=-2m | | -7b-3=-3+5 | | 45*145= | | 5m+6=5 | | 45*149= | | -5-4(8-9g)= | | -2(7-y)+2=-4 | | 6(17+5p)= |
