81=9(7+a)

Simple and best practice solution for 81=9(7+a) 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 81=9(7+a) equation: 



81=9(7+a)

We move all terms to the left:

81-(9(7+a))=0

We add all the numbers together, and all the variables

-(9(a+7))+81=0



We calculate terms in parentheses: -(9(a+7)), so:

9(a+7)

We multiply parentheses

9a+63

Back to the equation:

-(9a+63)



We get rid of parentheses

-9a-63+81=0

We add all the numbers together, and all the variables

-9a+18=0

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

-9a=-18

a=-18/-9

a=+2

See similar equations:

| 21b^-87b=-72 | | 7x-13=4x+5 | | 21b^-87=-72 | | 2+4+(4*11)=x | | 10x-25=-15 | | b/3-8=-10 | | 21x+7=2 | | y/3-5=5 | | 5m^2-6=m | | 4c-3=-8 | | Y=-5÷3x+3 | | 1/4(8y+4)-18=-1/2(4y-6) | | 49m^2-12=7m | | 3+-4y=-9 | | 13b=10 | | 4^2x07=256 | | 49m^2-144=-42 | | -(-2x+1)=9+14x | | 8f=112 | | 0=2x^2-20x+350 | | c^2-16c+48=0 | | 5m+4=20 | | 3z2+12z=0 | | x-126=200 | | 1=3u | | 5(d-12)-3=2(-4d=94)+87 | | -10=5/3r+5 | | 45×n=405 | | 60+w=2,400 | | 4x-6+3x-4=90 | | 4x-6+3x-4=180 | | 65-x=0.32x |

Equations solver categories