1+1/3a=-6

4 answers

i get up too 1/3a=-7
That's a good start.

Now, divide both sides of the equation by 1/3.

Remember that when you divide fractions, you must invert the dividing fraction.
then i get -21/1
I should have said, invert the dividing fraction and multiply.

You're right!

-7 / (1/3) = -7 * (3/1)
a = - 21