3x+21=4x+18

Simple and best practice solution for 3x+21=4x+18 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=4x+18 equation:


Simplifying
3x + 21 = 4x + 18

Reorder the terms:
21 + 3x = 4x + 18

Reorder the terms:
21 + 3x = 18 + 4x

Solving
21 + 3x = 18 + 4x

Solving for variable 'x'.

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

Add '-4x' to each side of the equation.
21 + 3x + -4x = 18 + 4x + -4x

Combine like terms: 3x + -4x = -1x
21 + -1x = 18 + 4x + -4x

Combine like terms: 4x + -4x = 0
21 + -1x = 18 + 0
21 + -1x = 18

Add '-21' to each side of the equation.
21 + -21 + -1x = 18 + -21

Combine like terms: 21 + -21 = 0
0 + -1x = 18 + -21
-1x = 18 + -21

Combine like terms: 18 + -21 = -3
-1x = -3

Divide each side by '-1'.
x = 3

Simplifying
x = 3

See similar equations:

| 240+1860=4p | | -6+22=5x | | 1/3-1/2(x-2)=7/3 | | 12.50-x=34.25 | | 7(9+2x)=63 | | -3/8n=-9 | | (0)=4x+3 | | 8t-12t=8 | | 45c-73=-48 | | 2/7=2z | | C=40h+30 | | -2(x+2)=-6-4x-2 | | X+10=5x+10 | | x-10/60=1 | | Cos30=x/36 | | -32v=6 | | 0.4y+1=1.2y-11 | | (x-10)/60=1 | | 22x-20=18x+14 | | 9q=18.1 | | 3n=45-6n | | -112.58+3h=-95.93 | | 8x^2-1=31 | | B^2+10b+6=-10 | | 9x+4=7x+23 | | 900=x^2+x^6 | | 7x+8=8x+5 | | .25x+2=.75 | | 25+65+y=360 | | 37x-17=33x-13 | | sinA=0.725 | | .2x+2=.75 |

Equations solver categories