21+3a=6a

Simple and best practice solution for 21+3a=6a 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+3a=6a equation:


Simplifying
21 + 3a = 6a

Solving
21 + 3a = 6a

Solving for variable 'a'.

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

Add '-6a' to each side of the equation.
21 + 3a + -6a = 6a + -6a

Combine like terms: 3a + -6a = -3a
21 + -3a = 6a + -6a

Combine like terms: 6a + -6a = 0
21 + -3a = 0

Add '-21' to each side of the equation.
21 + -21 + -3a = 0 + -21

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

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

Divide each side by '-3'.
a = 7

Simplifying
a = 7

See similar equations:

| 12=-6n+18 | | x=(30-2x)(20-2x)x | | 53=5+8x | | 0.52=ln(x) | | 9(8+a)=207 | | 0.52=log(x) | | 37=-2v+9 | | 13+5z=z-43 | | 4r+6t= | | 10(-2+n)=-170 | | -1=(b-5)/9 | | 15+4m=5(m+2) | | 3+2(2x+8)=1 | | 3a-40=5(7a-8) | | -2(n+2)=-36+2n | | 7+5y=-43 | | 6k+32=8k+4(3k-6) | | -3(1+2x)-5=-10-4x | | -4-4p=-2(2-5p) | | 4n+8(3n+8)=-160 | | 1/2(2x-6)=3x-(x-5) | | -8b+4(1-4b)=100 | | -2/3=8 | | -92=-6(3x+6)-2 | | b=2/5=3/5 | | 8x+4(5-x)+38= | | 18-6x=9-7x | | 5c=4c-2 | | 40x+5(1.5x)=1540 | | 2+5=2x | | 40x+5(1.5x)=1000 | | 4x+5=-40-5x |

Equations solver categories