3x+13=x+21

Simple and best practice solution for 3x+13=x+21 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 3x+13=x+21 equation:


Simplifying
3x + 13 = x + 21

Reorder the terms:
13 + 3x = x + 21

Reorder the terms:
13 + 3x = 21 + x

Solving
13 + 3x = 21 + 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.
13 + 3x + -1x = 21 + x + -1x

Combine like terms: 3x + -1x = 2x
13 + 2x = 21 + x + -1x

Combine like terms: x + -1x = 0
13 + 2x = 21 + 0
13 + 2x = 21

Add '-13' to each side of the equation.
13 + -13 + 2x = 21 + -13

Combine like terms: 13 + -13 = 0
0 + 2x = 21 + -13
2x = 21 + -13

Combine like terms: 21 + -13 = 8
2x = 8

Divide each side by '2'.
x = 4

Simplifying
x = 4

See similar equations:

| 3(-2x-1)=21 | | 3x-x+4x=-90 | | 7s+2=5-3 | | 15v=6v+7 | | 5x+7y+6z=42 | | 4x-2y+5z=12 | | 7x+3y+6z=24 | | x(2x-1)+2=0 | | 5(2x-3)-4(x-2)=71 | | 0=4x^2+7x+1 | | 57=4x+9 | | n^2+1n=0 | | 2x^2-1x+2=0 | | 3n-13=3 | | -4(3k+2)(2k+3)=0 | | 5x+11=-59-5 | | 5x+11=-59+-5 | | 5x+11=-59+-3 | | 4x+14=-28-3x | | 6+11x=-54x-x | | 11w=4950 | | 3q+2q+q= | | sin*2x=0.4 | | 2(3x-1)=20 | | 1/3x-5/6x=1/4 | | 6(x+2)=3x+12 | | 8m+3=7 | | 11-10x=33-17x | | 5x+13=90-60 | | 7x+30=10x+2 | | X+(x+9)=46 | | 5x-11=x+9 |

Equations solver categories