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Simplifying 2n + 7(n + -3) + 4n = 12n + 3 Reorder the terms: 2n + 7(-3 + n) + 4n = 12n + 3 2n + (-3 * 7 + n * 7) + 4n = 12n + 3 2n + (-21 + 7n) + 4n = 12n + 3 Reorder the terms: -21 + 2n + 7n + 4n = 12n + 3 Combine like terms: 2n + 7n = 9n -21 + 9n + 4n = 12n + 3 Combine like terms: 9n + 4n = 13n -21 + 13n = 12n + 3 Reorder the terms: -21 + 13n = 3 + 12n Solving -21 + 13n = 3 + 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. -21 + 13n + -12n = 3 + 12n + -12n Combine like terms: 13n + -12n = 1n -21 + 1n = 3 + 12n + -12n Combine like terms: 12n + -12n = 0 -21 + 1n = 3 + 0 -21 + 1n = 3 Add '21' to each side of the equation. -21 + 21 + 1n = 3 + 21 Combine like terms: -21 + 21 = 0 0 + 1n = 3 + 21 1n = 3 + 21 Combine like terms: 3 + 21 = 24 1n = 24 Divide each side by '1'. n = 24 Simplifying n = 24
| 5x-7-6=24 | | 4(2x+1)+9=45 | | 5x-3+2x=32 | | 4x+6x-141=99 | | -5x-10=6+2x | | 3x+2=(8) | | 7(2l+7)=161 | | (2x)*(2x)=0 | | -9+9-15=6-2p | | 7b+3=-9-6b | | -11.2+4(2.1+q)=37.5 | | 4.47=(-log)(x) | | -8(4-8n)=8n+24 | | 5a+ax-7b=by | | 4+7=55 | | 196=22-y | | 4.47=-log(x) | | 2n^2=5n+18 | | 2x-5=-21-2x | | 8.9+1.2(3a?1)=14.9 | | x-(-20)=196 | | -2+9n=5n+18 | | K^2=-21-10k | | 7*2(4+8)= | | 4y^2-80y=-364 | | 3x+2=(4) | | -20-x=196 | | 2(r-4)=5(x+7) | | 4*8+3=2*8-9 | | 0.06(a+200)+.1a=172 | | 18=x-5 | | 19a-13a=12 |