21=x-(-6)

Simple and best practice solution for 21=x-(-6) 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=x-(-6) equation:


Simplifying
21 = x + -1(-6)

Multiply -1 * -6
21 = x + 6

Reorder the terms:
21 = 6 + x

Solving
21 = 6 + x

Solving for variable 'x'.

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

Add '-1x' to each side of the equation.
21 + -1x = 6 + x + -1x

Combine like terms: x + -1x = 0
21 + -1x = 6 + 0
21 + -1x = 6

Add '-21' to each side of the equation.
21 + -21 + -1x = 6 + -21

Combine like terms: 21 + -21 = 0
0 + -1x = 6 + -21
-1x = 6 + -21

Combine like terms: 6 + -21 = -15
-1x = -15

Divide each side by '-1'.
x = 15

Simplifying
x = 15

See similar equations:

| 1/28(3x)= | | b-7+3b=28 | | t=-.7+(-2.5) | | 11x(2+4y)= | | -(10+3x)=-25 | | ?23=?2a-10+a | | 4-m=5 | | -2(2x-1)=-5+5x | | x-6.4x-1.9=-4.9(x+6) | | 6b-3=8b | | 6m-7-2m=1+5m | | 50+55(x)=2000+45(x) | | 16=m+9 | | -.7+(2.5)= | | 12x-3x=15 | | -14=x+(-8) | | 20=-4(-x+3) | | f(x)=x^3-13x^2+3x-39 | | 8x-8-6w=4w-7 | | -16x^2+80x+0=0 | | 7.5r+6=r(6-7) | | 2n+12-n=60 | | 3(3x-3)-4=3(x-2)+29 | | 1.2x=7.8 | | 1-2x-5+2-3x=7-6x+4 | | 5x-2=2+2x | | 5(y-x)=x+5y | | 63=21+0.35p | | 12=3/4y | | 7(4+2x)=70 | | -28-3x=56-10x | | h(-4)=2t-5 |

Equations solver categories