-21+9=-4

Simple and best practice solution for -21+9=-4 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+9=-4 equation: 


Simplifying
-21 + 9 = -4

Combine like terms: -21 + 9 = -12
-12 = -4

Solving
-12 = -4

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.

See similar equations:

| 40x=15+.25x | | -2x+7-12x=2x+x+24 | | 2x+35x=49x | | 4x-12-6x=14 | | -12=-5-6n+12 | | 10x=.10-.35x | | w/5-10=0 | | 0.84= | | 10x=.10-.35c | | 24x-6=42 | | 10x=.10x-.35 | | 10=.10x-.35 | | 2(9x+3)=11-7x+5x | | 16=7y+4 | | 3(n-7)=-20 | | 10x=.1-3.5x | | 4(2x+6)=(x+5)+2 | | 12+3x-9=7x-4x+8 | | .79x+24=1.19x | | .79x+24=1.19x | | 24x=.79+1.19x | | 24x=.79x+1.19 | | 5x*(10x+5)-2x*(10x+2)=3x+1 | | 4x^4-12x^3+8x^2=0 | | 9-x^2+2x^5-7x= | | 3x+6=x+12+.5(x+12) | | 24=.79x+1.19 | | xxx-4=140 | | 15+4x-9=15 | | 9h+10=100 | | y=2x^3-9x | | 10m+6=96 |

Equations solver categories