2 years ago

What is 9 + 10? This is hard homework

Mathematics

1 answer:

Lubov Fominskaja [6]2 years ago

4 0

9 + 10=21 :)
9=3 x3
10= 2 x 5
3x5=15
3x2=6
15 + 6 = 21 :)

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