-21=-(1-7n)-5(n+4)

Simple and best practice solution for -21=-(1-7n)-5(n+4) equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for -21=-(1-7n)-5(n+4) equation: 



-21=-(1-7n)-5(n+4)

We move all terms to the left:

-21-(-(1-7n)-5(n+4))=0

We add all the numbers together, and all the variables

-(-(-7n+1)-5(n+4))-21=0



We calculate terms in parentheses: -(-(-7n+1)-5(n+4)), so:

-(-7n+1)-5(n+4)

We multiply parentheses

-(-7n+1)-5n-20

We get rid of parentheses

7n-5n-1-20

We add all the numbers together, and all the variables

2n-21

Back to the equation:

-(2n-21)



We get rid of parentheses

-2n+21-21=0

We add all the numbers together, and all the variables

-2n=0

n=0/-2

n=0

See similar equations:

| 4(2x-8)=64 | | 90+.7x=30+.8x | | -13=5-9m | | 6k-80=94 | | 1/5w-5=5 | | (x−2)(x−7)=(x+7)(x+8) | | 36=6(b-6) | | -8-2(7r+1)=94 | | -8x+4-6x=4+2x | | 1+5x=-11+3x | | 0.18(y-8)+0.08=0.16y-0.07(30) | | -1/3(x+6)=1 | | .9c=36 | | -8+w/4=19 | | -60=-4(m-80) | | 2.3n+1.4n=-7.4 | | X+15=x+7 | | 6+94k=80 | | 12x–7=-28x+73 | | 1. 3a=9 | | 94+80k=6 | | 3=n-(-14) | | 12+3x=9+x | | 80+94k=6 | | −7=t/7 | | -7(1+5b)=203 | | 6+80k=94 | | 1-2x=-11-5x | | 3x-6-7=-14 | | x-9=-+ | | 2.6(6.5p-12.4)=127.92 | | 13+22=-5(9x-7) |

Equations solver categories