21r+17=80

Simple and best practice solution for 21r+17=80 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+17=80 equation: 


Simplifying
21r + 17 = 80

Reorder the terms:
17 + 21r = 80

Solving
17 + 21r = 80

Solving for variable 'r'.

Move all terms containing r to the left, all other terms to the right.

Add '-17' to each side of the equation.
17 + -17 + 21r = 80 + -17

Combine like terms: 17 + -17 = 0
0 + 21r = 80 + -17
21r = 80 + -17

Combine like terms: 80 + -17 = 63
21r = 63

Divide each side by '21'.
r = 3

Simplifying
r = 3

See similar equations:

| -2x-8=-9x+4 | | 4x-x=122 | | 4x+-4+72=180 | | -3x-8=7x+4 | | x-96=54 | | Tan^2+3=7 | | 1.4q-3.2-0.8q=-4q-1.8 | | 5x+6=7x+5 | | 8-3Inx=12 | | -5x-9=-7x+2 | | -3x+8=8x+4 | | 6=2t | | -8n+3(1+5n)=-6n-14 | | 4x+7=-7x-5 | | -5×17/25 | | 6x+8x-4=122 | | 3x+7=7x-4 | | 2q=-12 | | 1=2n-5 | | -5x-8=-6x-5 | | 18-(-f)=40 | | 14v-12v+4v=18 | | 850000=9x+3(x*1.5) | | x^2-4x+2=-2x+5 | | 2/3x(x-1/2)=-14 | | -3x-6=-8x-2 | | -6=3f | | ln(5t-3)=8 | | 105=0.5(n^2-n) | | 5x+6=8x+2 | | x^2+10X-20Y+25=0 | | N=0.5(n^2-n) |

Equations solver categories