3a-21=3

Simple and best practice solution for 3a-21=3 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 3a-21=3 equation:


Simplifying
3a + -21 = 3

Reorder the terms:
-21 + 3a = 3

Solving
-21 + 3a = 3

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 + 3a = 3 + 21

Combine like terms: -21 + 21 = 0
0 + 3a = 3 + 21
3a = 3 + 21

Combine like terms: 3 + 21 = 24
3a = 24

Divide each side by '3'.
a = 8

Simplifying
a = 8

See similar equations:

| x=4e-01 | | 2x+12=-16-5x | | 3a-18=39 | | x^2+9+4=0 | | 5x-10+x+10+3x+2=30 | | x^9+4=0 | | (2x+1)(x-3)-2x=2(x-1)+1 | | 18s+60=294 | | 24m^2+8m-16=0 | | 9x-19=x-4 | | 3m+17=8 | | 2a-14=20 | | u-3*8=80 | | 5a-25=80 | | 0.5ln(x+3)-lnx=0 | | 2.45x+2.15y=305000 | | 2a-18=16 | | f(x)=4x^5+3x^4+x+1 | | 40-3xy=25 | | 5x+623=976 | | a^2+a*b+b^2=0 | | 6x+11x-7=0 | | (x^2-16)=16x+1 | | 2x^3-9x^2+10x-3=0 | | 6k^4-14k^3+10k^2-1=0 | | 16x+2x-32-36=x | | y^2-2y+x=0 | | x^3+x^2-36=0 | | (a-x)*(b-x)*(a-b)=0 | | (a-x)*(b-x)=0 | | (x+5)(x^2+7x+12)=0 | | x(10x+4)=0 |

Equations solver categories