21r=5-r

Simple and best practice solution for 21r=5-r 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 21r=5-r equation: 



21r=5-r

We move all terms to the left:

21r-(5-r)=0

We add all the numbers together, and all the variables

21r-(-1r+5)=0

We get rid of parentheses

21r+1r-5=0

We add all the numbers together, and all the variables

22r-5=0

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

22r=5

r=5/22

r=5/22

See similar equations:

| 21r=5r | | 256=162-u | | 4y-25=77+y | | 5x-4+3x=-4 | | -7(-8+a)=23+4a | | 2.3x-4=2.9 | | 10m=8m+8 | | 1/4x+2.25-2=0.05 | | -7x+2=-54+x | | 10-3x-2x=5 | | x+(2x+4)=4x-2 | | 2/5x+1/3=9 | | (2x+17)+(4x+19)=90 | | -4+2n=-5n+45 | | -7+x-7x=65 | | 11=2x+x+8 | | (5x)+(x+9)+(2x-5)=180 | | -3+8(-3)=r-12 | | 700+80+n=700+80+n | | 10+v-17+v=4 | | 0.12x=0.3636 | | 3(x-3)-16=2(x-8)+5 | | 5(x-7)+15=5x-20 | | 0.02x=0.0238 | | 18x+5=7x | | -y/9=-38 | | 6(x+4)-8x=10 | | 35=11u-4u | | -14=4x=-2 | | -58=u/3 | | 20-9x=18.65 | | 6k+9=8k+1 |

Equations solver categories