Answer:
139
Step-by-step explanation:
Substitute x for 15.
9(15)+4
Then multiply:
135+4
And then add:
139
and
both have a common denominator, so you can combine them into a single fraction:

You cannot simplify this fraction further:
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Answer:

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Answer:
62,5721
Step-by-step explanation:
12,01 × 5,21
= 62,5721
Answer: 120 divided by 4 = 30
Step-by-step explanation: