3x+9=5x+21

Simple and best practice solution for 3x+9=5x+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+9=5x+21 equation:


Simplifying
3x + 9 = 5x + 21

Reorder the terms:
9 + 3x = 5x + 21

Reorder the terms:
9 + 3x = 21 + 5x

Solving
9 + 3x = 21 + 5x

Solving for variable 'x'.

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

Add '-5x' to each side of the equation.
9 + 3x + -5x = 21 + 5x + -5x

Combine like terms: 3x + -5x = -2x
9 + -2x = 21 + 5x + -5x

Combine like terms: 5x + -5x = 0
9 + -2x = 21 + 0
9 + -2x = 21

Add '-9' to each side of the equation.
9 + -9 + -2x = 21 + -9

Combine like terms: 9 + -9 = 0
0 + -2x = 21 + -9
-2x = 21 + -9

Combine like terms: 21 + -9 = 12
-2x = 12

Divide each side by '-2'.
x = -6

Simplifying
x = -6

See similar equations:

| ln(33x)=17 | | 9x-12=15+15 | | 1/8(h+4)=7 | | X+3x-5=x-4x-33 | | 20+5y-4=16y-11-2y | | log^2(12x)=4 | | (a+3)7=3 | | 4x+(x-1)=85 | | 306=10y+15x | | 6x+2.9=1.1 | | 10+10+10-10= | | 15x=306-10y | | -45-10y+12=-24y+9+8y | | 15x(10y)=306 | | x+121=-4(x-5) | | (a+3)/7=3 | | 6(x+3)=2x+6+8x | | k7/3 | | 8c-6=7c-16 | | 4[3-8(-9x-3)]=288x+108 | | -7(k-3)=35-5k | | .1x+.3y=2 | | 9x^2-bx=0 | | K-3+8k=6(k+1) | | sqrt(6x-44)=sqrt(2x-11)-sqrt(4x-29) | | 6y-8y^2=0 | | 3x+9x^2= | | 16+3y-1=12y-9-3y | | .75(x-16)=2(x+3)+2 | | 2x+7=10-4x | | Log(6-2x)=4 | | 1/6(-12)=-2 |

Equations solver categories