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The sum of their ages equals 80.
Gabrielle is 3 times older than Mikhail
Two numbers that have a sum of 80, with one number being 3 times the other are:
Gabrielle’s age: 60
Mikhail’s age: 20
60 + 20 = 80
20 x 3 = 60
Mikhail is 20 years old.
Answer:

Step-by-step explanation:

Distribute negative ( - ) sign through the parentheses



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Answer:
1day=2.5km
7days=?
<u>7</u><u>×</u><u>2</u><u>.</u><u>5</u>
1
=17.5km
1km=1000m
27.5km=?
=27500m