13=X-(-21)

Simple and best practice solution for 13=X-(-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 13=X-(-21) equation:


Simplifying
13 = X + -1(-21)

Multiply -1 * -21
13 = X + 21

Reorder the terms:
13 = 21 + X

Solving
13 = 21 + 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.
13 + -1X = 21 + X + -1X

Combine like terms: X + -1X = 0
13 + -1X = 21 + 0
13 + -1X = 21

Add '-13' to each side of the equation.
13 + -13 + -1X = 21 + -13

Combine like terms: 13 + -13 = 0
0 + -1X = 21 + -13
-1X = 21 + -13

Combine like terms: 21 + -13 = 8
-1X = 8

Divide each side by '-1'.
X = -8

Simplifying
X = -8

See similar equations:

| 11-10(x+1)=-2(4-x) | | t+k-3.2=9 | | Findf(3)letf(x)=4x-7 | | 3x+6x-1=10 | | 5(4x-4)-2(5x-12)=3(3x+4)-2 | | (X+3)-(x+3)=0 | | -24(1+23r)=-24+25r | | 2x-3=10x-21 | | 2y+4xy-3xy+8y-12x= | | -8[3y-1]-4=-20 | | 5x(x+2x)+2=12 | | -x-3x=16 | | 2x-3+x=42 | | r+5/6=-2.8 | | 5s+4s+16=-72 | | B^2=12b-32 | | a+7=5+3a | | .33a-.75=.75 | | 2h=3+(h+2) | | p=2(l+w)fori | | [y-5]+6=9 | | 9=1.75x | | x=2z-y | | 8-17y=2x | | 4x-2=-2(x+1)+6x | | 1x-15x=-35 | | 214=-x+117 | | y=1E^10x+30283 | | 5a-2b=11 | | (4x+5)+(x-9)=41 | | 3x-26+x=770 | | 8m+1=-9-7m |

Equations solver categories