3 years ago

PLEASE HELP!!! I PUT 50 POINTS

Mathematics

2 answers:

Lubov Fominskaja [6]3 years ago

7 0

Answer:

Step-by-step explanation:

1/3 = ?/21

1*? =?

3*? = 21

1*7 = 7

3*7 = 21

Eduardwww [97]3 years ago

4 0

Answer:

x=7

Step-by-step explanation:

7 times 3 =21 and 21 times 1 =21 cross multiply or butterfly method

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