21=x+8

Simple and best practice solution for 21=x+8 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+8 equation:


Simplifying
21 = x + 8

Reorder the terms:
21 = 8 + x

Solving
21 = 8 + 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 = 8 + x + -1x

Combine like terms: x + -1x = 0
21 + -1x = 8 + 0
21 + -1x = 8

Add '-21' to each side of the equation.
21 + -21 + -1x = 8 + -21

Combine like terms: 21 + -21 = 0
0 + -1x = 8 + -21
-1x = 8 + -21

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

Divide each side by '-1'.
x = 13

Simplifying
x = 13

See similar equations:

| 4q-5=4q | | log(x+14)-log(2)=log(3x+6) | | 4x^6+8x^2+16x^2=0 | | 2y-6y^2=0 | | 6x+25=16x-85x | | 20(x+2)=(x+1)(x+2) | | 4e^4x-6e^2x=0 | | X/3-15=6 | | dy/dx=sin(y) | | 140.9232=2*3.14*2.2*2.2+2*3.14*2.2*h | | 11n=3.5n | | 12+36=48 | | 54/(3x)-2x=0 | | x*5.7=-1 | | 5r=6r-8 | | 6s-28=74 | | 6x-4=4x+9 | | y=ax+8 | | x(3x+5)=15 | | 4(x+4)=(x-3)(x+4) | | 10t+30=5t+135 | | y=4x^2-2x+3 | | y=5x^2+6x+10 | | 14(x/84-12)=-13 | | 5(x+4)=(x-3)(x+4) | | 8x-2x^2=2 | | 5x^2+6x+10=y | | 3m+5=2m+5 | | 5r-3s-6r+2s= | | 5-6x=8+3x | | x^2-(2m+3)x+m^2-2=0 | | 5x^2+x=y |

Equations solver categories