長方形－三角形3種で求めます。
4a×8b－(4a×4b＋8b×a＋3a×2b)÷2
＝32ab－(16＋8＋6)ab÷2
＝(32－15)ab
＝17ab cm＾2
ありがとうございます！
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長方形－三角形3種で求めます。
4a×8b－(4a×4b＋8b×a＋3a×2b)÷2
＝32ab－(16＋8＋6)ab÷2
＝(32－15)ab
＝17ab cm＾2
ありがとうございます！
Users viewing this question
are also looking at these questions 😉
(4a×6b＋…)に訂正