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Simplifying (n + 7) + (n + 3) + (2 + n) + n = 40 Reorder the terms: (7 + n) + (n + 3) + (2 + n) + n = 40 Remove parenthesis around (7 + n) 7 + n + (n + 3) + (2 + n) + n = 40 Reorder the terms: 7 + n + (3 + n) + (2 + n) + n = 40 Remove parenthesis around (3 + n) 7 + n + 3 + n + (2 + n) + n = 40 Remove parenthesis around (2 + n) 7 + n + 3 + n + 2 + n + n = 40 Reorder the terms: 7 + 3 + 2 + n + n + n + n = 40 Combine like terms: 7 + 3 = 10 10 + 2 + n + n + n + n = 40 Combine like terms: 10 + 2 = 12 12 + n + n + n + n = 40 Combine like terms: n + n = 2n 12 + 2n + n + n = 40 Combine like terms: 2n + n = 3n 12 + 3n + n = 40 Combine like terms: 3n + n = 4n 12 + 4n = 40 Solving 12 + 4n = 40 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-12' to each side of the equation. 12 + -12 + 4n = 40 + -12 Combine like terms: 12 + -12 = 0 0 + 4n = 40 + -12 4n = 40 + -12 Combine like terms: 40 + -12 = 28 4n = 28 Divide each side by '4'. n = 7 Simplifying n = 7
| 8m3/2m9 | | 3^-2/2^4*2^4 | | Ln(2x)+ln(5x)=3 | | 2+j=9 | | 5-2x(1x+3)+2(1x-2)=5+5x | | 8b^4-28b^2a=0 | | 6(x+6)=6(x+13) | | log(6)=1 | | 32+90x=-27+5 | | 72n-42n^5=0 | | 2(x+7)=2(x+11) | | y+91=303 | | 2x+14x+49=0 | | 64=5x-9+4x | | 42=49-7 | | 32p^3-56p=0 | | 3(n-4)=-18+3n | | 5(2x+2)=-5(3x-3)-2x | | 4x=40,5/(5x) | | 550-25x=10+15x+20x | | 7a+50=14a-20 | | x+129=162 | | 3x+1=-4x+43Y | | 4x=40,5/5x | | 3x+10=7+6x | | 666x=254624204 | | -7(y-1)=2y+37 | | -5x+3=-61+3x | | 306=x+72 | | 7/6÷8= | | 28=3x+4x+7 | | 7/6÷8 |