21-7t+3r-rt=

Simple and best practice solution for 21-7t+3r-rt= 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 21-7t+3r-rt= equation:


Simplifying
21 + -7t + 3r + -1rt = 0

Reorder the terms:
21 + 3r + -1rt + -7t = 0

Solving
21 + 3r + -1rt + -7t = 0

Solving for variable 'r'.

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

Add '-21' to each side of the equation.
21 + 3r + -1rt + -21 + -7t = 0 + -21

Reorder the terms:
21 + -21 + 3r + -1rt + -7t = 0 + -21

Combine like terms: 21 + -21 = 0
0 + 3r + -1rt + -7t = 0 + -21
3r + -1rt + -7t = 0 + -21

Combine like terms: 0 + -21 = -21
3r + -1rt + -7t = -21

Add '7t' to each side of the equation.
3r + -1rt + -7t + 7t = -21 + 7t

Combine like terms: -7t + 7t = 0
3r + -1rt + 0 = -21 + 7t
3r + -1rt = -21 + 7t

Reorder the terms:
21 + 3r + -1rt + -7t = -21 + 7t + 21 + -7t

Reorder the terms:
21 + 3r + -1rt + -7t = -21 + 21 + 7t + -7t

Combine like terms: -21 + 21 = 0
21 + 3r + -1rt + -7t = 0 + 7t + -7t
21 + 3r + -1rt + -7t = 7t + -7t

Combine like terms: 7t + -7t = 0
21 + 3r + -1rt + -7t = 0

The solution to this equation could not be determined.

See similar equations:

| 38-7r=3(6-4r) | | 120-5x=22x+18 | | 86-4h=76-4h | | -17-9x=9x+19 | | -44-7k=12+k | | (-1(3M-5)-4(12-1m-8))=1m-11 | | -45=-6(-3f-4) | | (-(3M-5)-4(12-m-8))=m-11 | | -21.356=1.6(9-m) | | (-(3M-5)-4(12-m-8))= | | X^2+2-1=0 | | 45-5x=13x+23 | | 9-9x=81-30x | | -38=2b+25-(-7b) | | 2z-18-4z=-8 | | 130-5x=6x+9 | | 40x-5=-5-5 | | 19=41-2x | | Y^3-y=9 | | 2x+5=33-2x | | 9(4x-4)=3(12x+7) | | 8x-y-4x-7y= | | 4x+23=12x-65 | | 6(3+6x)-5=85 | | 2+x^2=0 | | -8.1=d-2.7 | | 3x+119=9x-13 | | 2a+4b+-6a-2b+a+3b= | | 5(4x-3)=6(x+1) | | 4x^2-6x-4=0 | | 60-4x=5x+19 | | .20(14000)+.14t=.18(14000+t) |

Equations solver categories