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Simplifying 3(4n + 7) = 81 Reorder the terms: 3(7 + 4n) = 81 (7 * 3 + 4n * 3) = 81 (21 + 12n) = 81 Solving 21 + 12n = 81 Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-21' to each side of the equation. 21 + -21 + 12n = 81 + -21 Combine like terms: 21 + -21 = 0 0 + 12n = 81 + -21 12n = 81 + -21 Combine like terms: 81 + -21 = 60 12n = 60 Divide each side by '12'. n = 5 Simplifying n = 5
| (n-11)=12+4(2n-3) | | b+3=2b-71 | | 5y+4.7=19.7 | | 2x-7=2+3x | | 9x-24=-56+x | | -108=9r | | 21x-19+3x+17=180 | | -3-6(1+4f)=33 | | 3x=5(x+15-3)+3 | | -6(3-7n)= | | (x+1)=24x | | 8(x-3)-5=115 | | -32+9z=4(2z-3) | | 6.69x+9=44.7561+3x | | -5(3-8k)=-21 | | 6x-9=5x+7 | | 3x-5+19-x+2x=p | | x-(.4*x)=350000 | | 2.3x^2-1.4x-6.8=0 | | 1(x+2)=2(x-3) | | 7x+6(x+1)=24x-73 | | 90+x= | | 3(1-4v)=30 | | x-5/1*x/x-5= | | log(x-5)=g(x) | | -2(3x-1)=3(1-x)-(3x+2) | | log(x-5)=g(f) | | m^2+225=0 | | 7r-4-2=-19 | | 2(9+2m)= | | 90+y= | | (2k+2)x^2+4x-4kx+k-2=0 |