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Simplifying n + -1(4n + -7) = 5n + -1(n + 21) Reorder the terms: n + -1(-7 + 4n) = 5n + -1(n + 21) n + (-7 * -1 + 4n * -1) = 5n + -1(n + 21) n + (7 + -4n) = 5n + -1(n + 21) Reorder the terms: 7 + n + -4n = 5n + -1(n + 21) Combine like terms: n + -4n = -3n 7 + -3n = 5n + -1(n + 21) Reorder the terms: 7 + -3n = 5n + -1(21 + n) 7 + -3n = 5n + (21 * -1 + n * -1) 7 + -3n = 5n + (-21 + -1n) Reorder the terms: 7 + -3n = -21 + 5n + -1n Combine like terms: 5n + -1n = 4n 7 + -3n = -21 + 4n Solving 7 + -3n = -21 + 4n Solving for variable 'n'. Move all terms containing n to the left, all other terms to the right. Add '-4n' to each side of the equation. 7 + -3n + -4n = -21 + 4n + -4n Combine like terms: -3n + -4n = -7n 7 + -7n = -21 + 4n + -4n Combine like terms: 4n + -4n = 0 7 + -7n = -21 + 0 7 + -7n = -21 Add '-7' to each side of the equation. 7 + -7 + -7n = -21 + -7 Combine like terms: 7 + -7 = 0 0 + -7n = -21 + -7 -7n = -21 + -7 Combine like terms: -21 + -7 = -28 -7n = -28 Divide each side by '-7'. n = 4 Simplifying n = 4
| T=4s+4.82 | | -5-(2-4p)= | | 6z-14=(-8) | | n/100=2/5 | | -(z+2)-2(1-z)= | | 0.36s+1.107=47.9 | | 7a*b-10ab*-7a*b= | | -137=-7(b+7)-4b | | (x+0.10)+(3x+0.05)+x=7.50 | | 8x+7x-22=110-7x | | 3(y+9)=-3 | | A-3r=14 | | 138=-6(3m-5) | | 3+4(-3v+4)=43 | | 0=5p-p | | 3+11-19Z=-17Z+10 | | 30+1.7x+5.5=10 | | 5x+90= | | 108=-2-2(1-8n) | | 8(x+2)-3(3x+4)= | | X-(25)=24 | | 2(d-10)-6=10 | | 15=-10x | | 11=-5+8x | | 0.36+1.107=47.9 | | 5(4b-8)-5(3b-5)=5b+8 | | 6-7n+2n-8= | | (2x-4x)=28 | | .2(15z-5)=16z+4 | | -3(1-3n)-2=-41 | | -98=7(v-6) | | 7u-w=u-5w |