r+13=21

Simple and best practice solution for r+13=21 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 r+13=21 equation:



r+13=21
We move all terms to the left:
r+13-(21)=0
We add all the numbers together, and all the variables
r-8=0
We move all terms containing r to the left, all other terms to the right
r=8

See similar equations:

| 14.8=n-9.3 | | 2-3(12x-6)=4(-8x+4)-30 | | -8=p ÷(-18) | | 7a+9=-5+9a | | 102=6(-2p+7) | | –9+f=–9−3f | | 0.13(x+2000)=6,760 | | 4/5c=3/10 | | 8–(b–2)=11 | | -18x-24=3x-3 | | -8=p ÷-18 | | 195=3×x | | v=4+2v | | -8x+2=-4x-10 | | (x-100)/x=20/100 | | (8x+7)-(2x+23)=90 | | 8.5x-6.7=12 | | 3x+22=7x+50 | | x-1=2x-20 | | (8x+7)=(2x+23) | | -c/7=-6 | | x/52=19/100 | | A=12m+8 | | 114-5x=24+5x | | 15-36=3w | | 3x-24-(2x-8)=0 | | m-2/5=11/5 | | (8x+7)+(2x+23)=180 | | 11x-2=74 | | 8-14(5x-3)=-174 | | 114-5x=24-5x | | −4(4x−9)+9x=−6 |

Equations solver categories