21-3r=-3r+21

Simple and best practice solution for 21-3r=-3r+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 21-3r=-3r+21 equation:


Simplifying
21 + -3r = -3r + 21

Reorder the terms:
21 + -3r = 21 + -3r

Add '-21' to each side of the equation.
21 + -21 + -3r = 21 + -21 + -3r

Combine like terms: 21 + -21 = 0
0 + -3r = 21 + -21 + -3r
-3r = 21 + -21 + -3r

Combine like terms: 21 + -21 = 0
-3r = 0 + -3r
-3r = -3r

Add '3r' to each side of the equation.
-3r + 3r = -3r + 3r

Combine like terms: -3r + 3r = 0
0 = -3r + 3r

Combine like terms: -3r + 3r = 0
0 = 0

Solving
0 = 0

Couldn't find a variable to solve for.

This equation is an identity, all real numbers are solutions.

See similar equations:

| (-1.21)/(-1.1) | | 3x-3x=6 | | 7/8y+1/7(y-8)=y+1/8 | | 6x+-9=-3x+36 | | 2y+4y=5y+9 | | Y+22+2y=5y | | 11/81=121/x | | y-24=17 | | .06(y-3)+.20=.02y-.03(50) | | 1/3(6y-9)=-2y | | 17=y-24 | | 70/x2 | | 7-4h=19 | | 7y-9-5y+8=0 | | 10/49=70/x | | 19/63=x/9 | | log(3)6-log(3)(x+2)=1 | | 5x-3=25x+1 | | 1/21/2= | | 2x-3(x+11)=-(x+10) | | 8x-(6x+7)=3x-36 | | x+2=1.7 | | 7(x+8)=4x | | 0=3x^4-3x^3-117x^2 | | -16+5n=45+n | | log(4)x-log(4)(x-6)=3 | | (x-h)(x^2+xh+h^2)=0 | | 1/3=x/27 | | 3(4x+5)+2(7x+3)= | | -7^1/2+5^1/3 | | 6/33/10 | | .06(y-3)+.20y=.02-.03(50) |

Equations solver categories