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29.07.2019 •
Mathematics
Simplify the following expression: ,3 + 5 (9+2n)
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Ответ:
Distribute the 5 to the items in the parentheses
3 + 5(9+2n)
3 + 45 + 10n
Combine like terms
48 + 10n
Ответ:
3 cans of green beans cost $1.80 retail but (a man bought) 9 cans of green beans how much did he pay ?
Well, $1.80 divided by 3 = $0.60 per can
and, 9 cans cost $0.60 per can. 9 times $0.60 = $5.40