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Simplifying -4(3 + -7n) = -12 + 3n (3 * -4 + -7n * -4) = -12 + 3n (-12 + 28n) = -12 + 3n Add '12' to each side of the equation. -12 + 12 + 28n = -12 + 12 + 3n Combine like terms: -12 + 12 = 0 0 + 28n = -12 + 12 + 3n 28n = -12 + 12 + 3n Combine like terms: -12 + 12 = 0 28n = 0 + 3n 28n = 3n Solving 28n = 3n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-3n' to each side of the equation. 28n + -3n = 3n + -3n Combine like terms: 28n + -3n = 25n 25n = 3n + -3n Combine like terms: 3n + -3n = 0 25n = 0 Divide each side by '25'. n = 0 Simplifying n = 0
| 2+0.30x=5.60 | | x+0.05x=25.20 | | -n+5n=-12+2n | | 32x^2-70x-3=0 | | 15x-11x=20 | | 13x+6(-3x-1)=-63 | | 7m+8=8+2m | | plotf(x)=3x^2-30x-72 | | -5(y-z)= | | f(x)=3x^2+30x-30 | | x/10=x-2,25 | | -19=5x-9 | | x/10-2,25=x | | 2(3r+1)-4(r-4)= | | 2y-3=3y-14 | | x-31=2x | | -2/5y=24 | | 6(2-5z)=-168 | | x^4+2x=60 | | F(x)=-x^2-6x+1 | | 4(3y+2)=-76 | | 3xy+9y=14 | | 4/3*X-5=10 | | -3/4n=8/9 | | 0.6x+0.06=0.006 | | 2y(11+9)= | | 6r-2=7-3r | | 7(z-4)+8z-1= | | x−7x−1y−5y/Y | | 3(9-4z)=3 | | 2x(11+9)= | | 5x+3x-60=150 |