x-7=21-x

Simple and best practice solution for x-7=21-x 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-7=21-x equation:


Simplifying
x + -7 = 21 + -1x

Reorder the terms:
-7 + x = 21 + -1x

Solving
-7 + x = 21 + -1x

Solving for variable 'x'.

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

Add 'x' to each side of the equation.
-7 + x + x = 21 + -1x + x

Combine like terms: x + x = 2x
-7 + 2x = 21 + -1x + x

Combine like terms: -1x + x = 0
-7 + 2x = 21 + 0
-7 + 2x = 21

Add '7' to each side of the equation.
-7 + 7 + 2x = 21 + 7

Combine like terms: -7 + 7 = 0
0 + 2x = 21 + 7
2x = 21 + 7

Combine like terms: 21 + 7 = 28
2x = 28

Divide each side by '2'.
x = 14

Simplifying
x = 14

See similar equations:

| 12-3(7-2t)=3(t-1) | | 2m+4m+2n-m-n= | | n/24=8/32 | | d=(b-c)/a | | 3/4m+2=8 | | 3y+5.2=2+5y | | 5r+30/15=5r-20/5 | | x-4(x+4)=2(3x+10) | | (4z+2)(4+z)=0 | | 8(X+6)+x=3(-9-x) | | -6x=-48+4x | | y=-1/8/3+1 | | y=240x+b | | -2w(w-9)(w+5)=0 | | (4u-5)(4+u)=0 | | 9d-18=18 | | X(X-4)=X^2+4X+3 | | 4(2n-1)=12 | | x/-5=-20+10 | | 5(y+9)(-y+1)=0 | | 5x^2=1x | | 3x-15/4+5=29/4 | | 4-(12-3x)=7 | | 4x-5500=15x | | y=40x+12 | | -6+(-4)=14 | | 60+20d=40d | | y=-40+15x | | 154m=18+12m | | 6(n+3)=2n+18+4n | | 61/4+15/8 | | 5x+40=340-45x |

Equations solver categories