Please help me I don't understand. Can someone go step by step explaining what I need to do

Mathematics

1 answer:

DiKsa [7]3 years ago

8 0

For a you need to do (10 times 13) plus (10 times 7) because there's two boxes one is shaded.

For b you need to do (7.5 times 20) plus (2.5 times 20)

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