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sergiy2304 [10]
3 years ago
10

3f + 9 < 21 Help please

Mathematics
2 answers:
Arte-miy333 [17]3 years ago
6 0

Answer:

\boxed {f < 4}

Step-by-step explanation:

Solve the following inequality:

3f + 9 < 21

-Subtract 9 on both sides:

3f + 9 - 9 < 21 - 9

3f < 12

-Divide both sides by 3:

\frac{3f}{3} < \frac{12}{3}

\boxed {f < 4}

fiasKO [112]3 years ago
4 0

Answer:

f < 4

Step-by-step explanation:

3f + 9 < 21

21 - 9 = 12

12 / 3 = 4

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