21=2x+9

Simple and best practice solution for 21=2x+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 21=2x+9 equation:


Simplifying
21 = 2x + 9

Reorder the terms:
21 = 9 + 2x

Solving
21 = 9 + 2x

Solving for variable 'x'.

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

Add '-2x' to each side of the equation.
21 + -2x = 9 + 2x + -2x

Combine like terms: 2x + -2x = 0
21 + -2x = 9 + 0
21 + -2x = 9

Add '-21' to each side of the equation.
21 + -21 + -2x = 9 + -21

Combine like terms: 21 + -21 = 0
0 + -2x = 9 + -21
-2x = 9 + -21

Combine like terms: 9 + -21 = -12
-2x = -12

Divide each side by '-2'.
x = 6

Simplifying
x = 6

See similar equations:

| 15+2(x-6)=10x-7 | | 3/m-4+1/3m-12=6/m | | 18+2.5h=12+3.75h | | 42=5x+2 | | 5x+5(x-1)=35 | | 9x^2-28x+24=0 | | x+15=-89 | | 9^(3/2( | | 19+3.5h=12+4.75h | | 7/5x=77 | | x+25=(3x+15) | | 3/m-4/3(m-4)=6/m | | 7x^2-5=34x | | Z-17=5 | | 3=-6x+y | | 50-30+80=10 | | n/3=37 | | (6x-2)(x+7)=0 | | 8+10x-4-6x= | | 9-(n/3)=28 | | -6(5+-2x)=28 | | (4x+10)(3x-6)=0 | | 7x^2-35x+x-5=0 | | 2.5d+9.25=4+4.25d | | 8y+3=2y+17 | | 5xy(2x^2+3x+4)= | | 6cu+5cu= | | 8x-6=12+2(x+3) | | 5x^2/y^3.4y^2/10x | | (730000-(x-214000)*100)=45900 | | x/24=3/8 | | 8x-6=12+2(x-3) |

Equations solver categories