21+9a=66

Simple and best practice solution for 21+9a=66 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 21+9a=66 equation: 


Simplifying
21 + 9a = 66

Solving
21 + 9a = 66

Solving for variable 'a'.

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

Add '-21' to each side of the equation.
21 + -21 + 9a = 66 + -21

Combine like terms: 21 + -21 = 0
0 + 9a = 66 + -21
9a = 66 + -21

Combine like terms: 66 + -21 = 45
9a = 45

Divide each side by '9'.
a = 5

Simplifying
a = 5

See similar equations:

| 3e^-(t/0.48) | | 236x-1888=0 | | x+(x+30500)=190500 | | 5-(3x)=0 | | 5-(3-x)=5 | | 2(x+5)+8= | | 4(3+h)-2(5+3h)= | | -3(y/1)= | | 27x^2+42x-9=0 | | ln(7-x)-ln(3x-1)=1 | | 35-3x=7-10x | | 3/9x | | 4x+9=31-6x | | 6x+-1(-x)=3x+8 | | 4x*5y*2z= | | ln(x+1)+lnx=2 | | 6k+1+5k= | | (3ad/4cd)^-2 | | 2+9x=4x-13 | | x+y+3xy=2015 | | 4a-9b= | | 4z/9-2=0 | | 7x+10y=300 | | (1-w)(5w-6)=0 | | y(y-1)=20 | | 56x^2+54x+10= | | -1.5x^2+24x-22.5=0 | | (5x+8)(x-1)whenx=-5 | | 10+2y=8 | | y=4x^2+2x+3 | | 2x-11y=19 | | 3(5x+3)+1=7x-9(x-3) |

Equations solver categories