Question

REALLY NEED HELP! What is 1/3(21−3a)=6−a​

Answer 1

1/3(21-3a)=6-a
21/3-3/3 a=6-a
7-a=6-a
-a+a=6-7
0≠-1 Then this equation don´t have solution.

Answer: this equation doesn´t have solution. because 0≠-1

Answer 2

No solution exist.

Explanation:

The given equation is

`(1)/(3)(21-3a)=6-a`

Using distributive property we get

`(1)/(3)(21)+(1)/(3)(-3a)=6-a`

`7-a=6-a`

Isolate variable terms.

`a-a=6-7`

`0=-1`

This statement is false for any value of a because
`0\\eq -1`

Therefore the given equation has no solution.