Question

How do you evaluate `4- 7a = - 8a + 5a`?

Answer 1

`a=1`

Explanation:

Ok lets start with the right side of the equation.

`-8a+5a= -3a`

So, our equation is now: `4-7a=-3a`

Next we add `7a` to both sides.

Now, our equation should be: `4=4a`

Finally, we divide both sides by 4.

With this we get `1=a`, which is our answer.

Hope this helps!