21.21=2*3.14r

Simple and best practice solution for 21.21=2*3.14r 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 21.21=2*3.14r equation: 



21.21=2*3.14r

We move all terms to the left:

21.21-(2*3.14r)=0

We add all the numbers together, and all the variables

-(+2*3.14r)+21.21=0

We get rid of parentheses

-2*3.14r+21.21=0

Wy multiply elements

-6r+21.21=0

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

-6r=-21.21

r=-21.21/-6

r=3+1/1.8691588785

See similar equations:

| 2/3x+10=40 | | 64=t8 | | 6(10x-3)=1.2+4x | | 4=3/4m=6 | | X^2+3y+20y+3=180 | | 19=37-y | | |2n-1|=5 | | 6(2y+6)=4(1+3y) | | |7x+28|=21 | | x/13=25/26 | | 3x*5=-375 | | 4+3(x-1)=7x | | 5x=9=x=20 | | 7x^2+83x+66=0 | | 28−6x+4=30−3x | | 4x2−8x−3=0 | | 289+50x=15x | | t=3t-7=4t-7 | | 4-m/3=5+m/2 | | 3x2+19x+16=0 | | -8x+7x-4x=0 | | X*2+9=x*4+3 | | (2^2-x/2)=(1/128) | | 1.5x+0.5x=8 | | 3x-9=8-x | | 10x+5(139-x)=935 | | 30=4.9t² | | 5+x=x*4+3 | | x^2(x^2−64)−81(x^2−64)=0 | | x(55-x)=756 | | 2n-8n+5=35 | | 2x*3=x*7-11 |

Equations solver categories