21-(21)=

Simple and best practice solution for 21-(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-(21)= equation: 


Simplifying
21 + -1(21) = 0

Multiply -1 * 21
21 + -21 = 0

Combine like terms: 21 + -21 = 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:

| 15y-15=3y+75 | | (X+6)=(2x) | | 21=2y-11 | | T=25.75s+4 | | 4n-3=26 | | 3y+2.1=5y+y-18.9 | | 2x^3-4x^2=6x | | (x+6)=(2x+4) | | 32=5k+13k | | 27x-45=2x+17 | | -8n-1=-23 | | (9-2i)(9+2i)=0 | | 4(x-5)-10=25x-156 | | (3x+17)=(7x-15) | | 180-25= | | 5b=21+4d | | 8(-3)(-2)(-2)= | | (x-4)=2x+3 | | 4y+18=2 | | 9gh+3g=4h | | (55+x)+(x)=180 | | 5p*2+7m=x | | -3[(3y+3)-(8y-8)]=6(1-y)-2 | | 3(c+15.25)=52 | | 24+-6=18(-6) | | 5p*2+15m=x | | 9y+4=4y+27 | | 27-3c=-3(6-2c) | | 5p*2+3m=x | | -1(12-4x)+8(10-x)= | | 2x+15=60-3x | | 5x-30+6=7x-6 |

Equations solver categories