4x+21=x+9

Simple and best practice solution for 4x+21=x+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 4x+21=x+9 equation:


Simplifying
4x + 21 = x + 9

Reorder the terms:
21 + 4x = x + 9

Reorder the terms:
21 + 4x = 9 + x

Solving
21 + 4x = 9 + 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 + 4x + -1x = 9 + x + -1x

Combine like terms: 4x + -1x = 3x
21 + 3x = 9 + x + -1x

Combine like terms: x + -1x = 0
21 + 3x = 9 + 0
21 + 3x = 9

Add '-21' to each side of the equation.
21 + -21 + 3x = 9 + -21

Combine like terms: 21 + -21 = 0
0 + 3x = 9 + -21
3x = 9 + -21

Combine like terms: 9 + -21 = -12
3x = -12

Divide each side by '3'.
x = -4

Simplifying
x = -4

See similar equations:

| 5z-8-2+2=0 | | 3+y=10-3(y+3) | | 8x^2+14x+8=0 | | 8x^2+14+8=0 | | 4(9+x)=3(3x-7) | | 4x-4=20x+4 | | 5(n-1)=6n-1 | | (E+4)+3=9 | | r-0.4=-3.2 | | -11=-c | | 2x^2+6x-10=-x^2+6 | | -6d+7=37 | | 9a^2b-30ab^2+25b^2=0 | | 18-(3x+5)=5(x-11) | | -17-z=-3 | | -2(-1-3x)=7x | | 13=-q+8 | | 96=-16t^2+80t | | 2xy+3y+2x+3= | | x^3-9x^2+24x-7-x-8=0 | | -18=3y+21 | | 36x^2+40x= | | -17x+14+20+-2x=5-(-3) | | 770=3100r+150 | | 19s=50 | | 9b+2b-7b=428 | | -21=-39-d | | 13x=11 | | X^2+(2x*2x)=25 | | x^2*y^3=288*x^6*y^5 | | -5x-4y-10=0 | | y*y*y=Y |

Equations solver categories