x-(-21)=9

Simple and best practice solution for x-(-21)=9 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 x-(-21)=9 equation: 


Simplifying
x + -1(-21) = 9

Multiply -1 * -21
x + 21 = 9

Reorder the terms:
21 + x = 9

Solving
21 + x = 9

Solving for variable 'x'.

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

Add '-21' to each side of the equation.
21 + -21 + x = 9 + -21

Combine like terms: 21 + -21 = 0
0 + x = 9 + -21
x = 9 + -21

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

Simplifying
x = -12

See similar equations:

| 3s-2=2s-1 | | 2x+12=47-3x | | y+(5)=-6 | | 3t-4=4t-2 | | 2(11-a)=a-5 | | x+(-3)=9 | | x= | | 6x+34=14x-38 | | 9x-5=4x+15 | | y+(-6)=8 | | 6a+7=7+3a | | 11x-7=9x+5 | | x-7=-12 | | -8+7x=-7x+48 | | 11x+5=9x+17 | | 2-3h=2h+12 | | y-13=-5 | | 2x+7=5x+25 | | -5u+5=-2u-19 | | x+1=7x-53 | | -4x+10=2+4x | | 7b-2=4b-2 | | 3+6j=-j+59 | | 5n-5=-7n+139 | | x+4=8-x | | -7f-10=8-4f | | 3x-9=10x-2 | | 8+5z=-2z-48 | | 16x^2-a^2-2a-1= | | 3(-4x+5)=5(-3x+7)+10 | | -5(-6-x)=6+3(8+2x) | | 3(-4x+6)=-10x-18 |

Equations solver categories