21x-x-3=7

Simple and best practice solution for 21x-x-3=7 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 21x-x-3=7 equation:


Simplifying
21x + -1x + -3 = 7

Reorder the terms:
-3 + 21x + -1x = 7

Combine like terms: 21x + -1x = 20x
-3 + 20x = 7

Solving
-3 + 20x = 7

Solving for variable 'x'.

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

Add '3' to each side of the equation.
-3 + 3 + 20x = 7 + 3

Combine like terms: -3 + 3 = 0
0 + 20x = 7 + 3
20x = 7 + 3

Combine like terms: 7 + 3 = 10
20x = 10

Divide each side by '20'.
x = 0.5

Simplifying
x = 0.5

See similar equations:

| 16x+12=8x+32 | | 4x-6x-1=19 | | 2x-(-8)=10 | | 6-9x=70-23x | | 6x-1x=25 | | -81-9x=7x+15 | | 2x+28=12x-92 | | 53-6x=3x+20 | | 3x+13=-42-8x | | 14x+15=7x+36 | | -x^2+8x=-27 | | x+5x=-10 | | 6-8x=191-43x | | x^2+4x=10 | | 2x^2+x=21 | | -10-8x=-50 | | x=(6+1+7) | | 49x^2+100=0 | | 54.9+x=45.2 | | 8+3x=16+x | | 3x-1=11x-49 | | Y=2b+2h | | 8x+2.8=5x+10 | | -2x-3=17 | | 76a+96=12a | | 3x+39=11-25 | | 83-2x=3x+13 | | y-9=14 | | 2(x-10)=-3 | | 3x-15=4x+36 | | 5(y+2)=6(y-4) | | 73-5x=8x+21 |

Equations solver categories