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Simplifying 4(5 + -1n) = 2(n + 1) (5 * 4 + -1n * 4) = 2(n + 1) (20 + -4n) = 2(n + 1) Reorder the terms: 20 + -4n = 2(1 + n) 20 + -4n = (1 * 2 + n * 2) 20 + -4n = (2 + 2n) Solving 20 + -4n = 2 + 2n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-2n' to each side of the equation. 20 + -4n + -2n = 2 + 2n + -2n Combine like terms: -4n + -2n = -6n 20 + -6n = 2 + 2n + -2n Combine like terms: 2n + -2n = 0 20 + -6n = 2 + 0 20 + -6n = 2 Add '-20' to each side of the equation. 20 + -20 + -6n = 2 + -20 Combine like terms: 20 + -20 = 0 0 + -6n = 2 + -20 -6n = 2 + -20 Combine like terms: 2 + -20 = -18 -6n = -18 Divide each side by '-6'. n = 3 Simplifying n = 3
| -10-7x=7x+21 | | 6x-40=12-5 | | 2(2n-6)=3(2+n) | | (2k+4)(2k+9)=3k^2+11 | | 3x-4(4-2x)=x+8 | | -8c+4-5= | | (1+2y)+y=19 | | x^3+15x^2-5x-8=0 | | 5x^3-15x^2-50x-8=0 | | 4x=100+8 | | 9-5y=6-6y | | 5-2y=9 | | 5x=36+3x | | z^2=10z-20 | | 8x+100=10x | | .8x+.05(14-x)=.10(-98) | | z^2-10z=-20 | | z^2-10x=-20 | | 3x=2x+20 | | .8x+.05(14-x)=.10x(-98) | | z^2-10z=20 | | -18=x-4 | | .8x+.05x(14-x)=.10x(-98) | | n^2=-10n-25 | | 4x+11=3x+36 | | z^2-22z+21=0 | | .8x+.5x(14-x)=.10x(-98) | | -83=17-4x | | (X^2)+(9x)+14=0 | | 5m+2m=21 | | 31-3y=41 | | 29r-13=57 |