(9+21)9=(12+x)12

Simple and best practice solution for (9+21)9=(12+x)12 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 (9+21)9=(12+x)12 equation: 



(9+21)9=(12+x)12

We move all terms to the left:

(9+21)9-((12+x)12)=0

We add all the numbers together, and all the variables

-((x+12)12)+309=0



We calculate terms in parentheses: -((x+12)12), so:

(x+12)12

We multiply parentheses

12x+144

Back to the equation:

-(12x+144)



We get rid of parentheses

-12x-144+309=0

We add all the numbers together, and all the variables

-12x+165=0

We move all terms containing x to the left, all other terms to the right

-12x=-165

x=-165/-12

x=13+3/4

See similar equations:

| 11x+8=13x | | (9+21)9=(12+c)12 | | 6x+12/19-5x=17/18 | | 3(4x-12)=72 | | (3x+8)/10-(9x-9)/14=(31x-4)/14+(4x-1)/35 | | a^2-6a+6=-3 | | x-3.0=31/4 | | 26-3.50x=8.5 | | 7^x=22 | | 100+8=m | | 2/3x+1/2=7/6x | | k/4=-1.2 | | 26=w/3+9 | | 9.25=1.75+3x | | 11x+17=-x-7 | | r-11=30 | | c+5/4=4 | | 3(3u-1)=4(4u=1) | | 13k−6k=7 | | 1=c/3-3 | | x+9=14+2 | | 19a−15a=12 | | 4(h−16)=12 | | 4p+4p=48 | | 5x-8=10x-3 | | 3(d+3)=12 | | (3x-2)+6=+2 | | 6(5g+3)=30g | | 7x-2x+4=34 | | (3x+2x)+6=2 | | 2j−-4=16 | | -x^2-20=8x-5 |

Equations solver categories