Asked by Jen

Hello i'm haveing trouble with this problem, when I solve it I'm geting the A=24.375, but it does not plug in correctly.

1.5 + 4/5a =21 Solve what A equals

I know the steps I just think i'm solveing it wrong.
Answered by bobpursley
If the a is in the numerator (4a/5), it is right, but if it is in the denominator (4/5a), it is wrong.
Answered by Jen
It is 4/5a so what am I doing wrong?
Answered by Jen
1.5+ 4/5 x a=21
Answered by bobpursley
Let me say this very clearly:
If the problem is

1.5+4/(5a)=21

subtract 1.5 from each side

4/(5a)=19.5

4/(5*19.5)=a
or a= 1.026

Now if it is (4/5)a then your answer is RIGHT
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