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Simplifying (3n + -1) + -1(n + 6) = 7 Reorder the terms: (-1 + 3n) + -1(n + 6) = 7 Remove parenthesis around (-1 + 3n) -1 + 3n + -1(n + 6) = 7 Reorder the terms: -1 + 3n + -1(6 + n) = 7 -1 + 3n + (6 * -1 + n * -1) = 7 -1 + 3n + (-6 + -1n) = 7 Reorder the terms: -1 + -6 + 3n + -1n = 7 Combine like terms: -1 + -6 = -7 -7 + 3n + -1n = 7 Combine like terms: 3n + -1n = 2n -7 + 2n = 7 Solving -7 + 2n = 7 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + 2n = 7 + 7 Combine like terms: -7 + 7 = 0 0 + 2n = 7 + 7 2n = 7 + 7 Combine like terms: 7 + 7 = 14 2n = 14 Divide each side by '2'. n = 7 Simplifying n = 7
| 20x+2(x+40)= | | 25x^2-9x= | | 2(-1-3x)-5x=20 | | 8r-2(2r-1)=5(2r-4) | | 350x=1400 | | 40-2q=8+2q | | 0.96z-6.54z+0.3=2.76 | | 2cos^2x+2cos=0 | | 4v+2v=42 | | 4r+2=10r-20 | | 7+4x=67 | | 36-4p=6+p | | -10=5a+8a+29 | | z^2-10z=-21 | | 10x=0.5 | | 7(2-x)-5(x-1)=-6x+1 | | z^2-10z=21 | | x^2+4x-61=6 | | 3m^2+5n^2=21 | | 4w-21=3w+6 | | 91=s+52 | | 20x+10= | | 2(10-2y)-y=5 | | 308=44b | | 6(n+7)-20=6n | | 7log^3(4x+3)=14 | | 3g=165 | | -2.5x=0.1 | | (3+i)(5+4i)= | | 0.5x=0.1 | | -16+8x+8k+-5x-5k+9= | | 3(2l+9)=69 |