3r-5=-21+r

Simple and best practice solution for 3r-5=-21+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 3r-5=-21+r equation:


Simplifying
3r + -5 = -21 + r

Reorder the terms:
-5 + 3r = -21 + r

Solving
-5 + 3r = -21 + r

Solving for variable 'r'.

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

Add '-1r' to each side of the equation.
-5 + 3r + -1r = -21 + r + -1r

Combine like terms: 3r + -1r = 2r
-5 + 2r = -21 + r + -1r

Combine like terms: r + -1r = 0
-5 + 2r = -21 + 0
-5 + 2r = -21

Add '5' to each side of the equation.
-5 + 5 + 2r = -21 + 5

Combine like terms: -5 + 5 = 0
0 + 2r = -21 + 5
2r = -21 + 5

Combine like terms: -21 + 5 = -16
2r = -16

Divide each side by '2'.
r = -8

Simplifying
r = -8

See similar equations:

| -5(4b+4)+(21b-5)=0 | | -5(4b+40+921b-5)=0 | | a^2-2ab+2b^2-4b^3=10 | | -4(4b+4)+(17b-5)=0 | | 2x=51 | | -(6y+3)-(5y-8)=3 | | 8(x-5)+x=9(x-5)+5 | | 7m-2= | | 2(x-3)-4=18 | | 12(4x-3)=4(12x+6) | | 2(n+5)=22 | | 9(4x-5)=3(12x+4) | | 4x+50=9x+10 | | 35+18u-5u^2=0 | | 6x^2+3x=0 | | 6+17z-4=9z+86-6z | | 4x^2+12x+9=0 | | 4+7r-1=8r+18-6r | | -7x+10=87 | | 8t-26=-26+t | | -9(y+6)=36 | | (4x^4)+(4x^3)-(35x^2)-35x-9=0 | | -20+x=x+17 | | X+.625=-.25 | | A^2-14=36 | | 34.6z=207.6 | | -.285714x=.228571 | | P^2+5p-14=0 | | 6(-2+2m)=-24 | | 4x+2=-(x-27) | | 2w^2=72 | | 12.6x-4.9x=-123.2 |

Equations solver categories