21=5n+2n

Simple and best practice solution for 21=5n+2n 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=5n+2n equation: 



21=5n+2n

We move all terms to the left:

21-(5n+2n)=0

We add all the numbers together, and all the variables

-(+7n)+21=0

We get rid of parentheses

-7n+21=0

We move all terms containing n to the left, all other terms to the right

-7n=-21

n=-21/-7

n=+3

See similar equations:

| 30=6x+54 | | 8+8x=10+7x | | 90=9(-3+x) | | 9w-4=3w+8 | | 9x-12=3(3x+5) | | b÷5=-6 | | -96=48-8x | | −2x+10=12 | | -4(4y-1)+8y=7+2(2y-6) | | 2(g-4)=7.5 | | 4x+7=-4x-2 | | 1-4x-8=1-10x+1 | | k-18=14+17k | | x-60=40=-8(x+8) | | 4n-3n=2n-4+5-6 | | 3=-9+2z | | -20x+16=-12x | | 2=(g-2/2) | | 9x+18=x-8 | | B=40.00-0.10x | | 136+4x+20=180 | | 12=8x−20 | | -5(r+5)=-88 | | 5x+x−8=6(x+3)−8 | | 18=2(z+4) | | 11=n+17 | | 6x+19=2x+1 | | -20+15n=9+15n-12 | | (v−6)8​ =(v+1)6​ | | x/4+3=-2x-6 | | f/9f+3=21 | | x2-14x+5=0 |

Equations solver categories