Answer:
4
or 4.75
Step-by-step explanation:
first we're going to convert the number into improper fractions.
7
=
and 2
= 
For subtracting it is suitable to adjust both fractions to an equal denominator, so we're going to multiply
x2, it'll equal the same number.
So now we have
-
, 30-11= 19.
simplified is, 4
.
As you can see I also added 4.75 as an answer, that's if the answer must be a decimal.
I hope this helps you!
4+X/X=X
4+X=X*X
when the answer fits the equation, the answer is correct
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Your answer is 7.77777777778