3x+21=x+51

Simple and best practice solution for 3x+21=x+51 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+21=x+51 equation:


Simplifying
3x + 21 = x + 51

Reorder the terms:
21 + 3x = x + 51

Reorder the terms:
21 + 3x = 51 + x

Solving
21 + 3x = 51 + 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 + 3x + -1x = 51 + x + -1x

Combine like terms: 3x + -1x = 2x
21 + 2x = 51 + x + -1x

Combine like terms: x + -1x = 0
21 + 2x = 51 + 0
21 + 2x = 51

Add '-21' to each side of the equation.
21 + -21 + 2x = 51 + -21

Combine like terms: 21 + -21 = 0
0 + 2x = 51 + -21
2x = 51 + -21

Combine like terms: 51 + -21 = 30
2x = 30

Divide each side by '2'.
x = 15

Simplifying
x = 15

See similar equations:

| 0.1u-3.3=-1.4u+5.8 | | 450000=0.15x | | 2a-9= | | 7-21x/15x-5 | | 2x+150=5x+121 | | y=6/10x | | 23y-y^2=76 | | 2x+150=5x+151 | | 7-4x+2=2x+3 | | 8m-21=35 | | 3e^2x-7=50 | | 4x+18=2x+36 | | 3e=50 | | -9+8k-3-6k= | | 81x=5y | | 4x+18=2x+34 | | 6y-11y=-28-37 | | (t-3)(t-4)=0 | | 3(x+2)-4(2-x)=-2+7x | | k^2+8=-2k | | 8x+72=2x+24 | | 3a^2-8a=-4 | | 5x+41-6x=2-7x+3 | | 5xy-xy+2x-y= | | 350000=0.15x | | -8u=96 | | -12=-3c-3c | | 5v^2=-9-18v | | 2x-6=3-2.5x | | 4x-82=2x+24 | | 9n+9=-36 | | 12-(x-2.5)=210 |

Equations solver categories