Answers
アオ=18-△
三角形アオイの面積
12×(18-△)÷2=6(18-△)
エカ=12-6=6
三角形エカオ
△×6÷2=3△
三角形アオイ+三角形エカオ=87
6(18-△)+3△=87
108-6△+3△=87
-3△=-21
△=7
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アオ=18-△
三角形アオイの面積
12×(18-△)÷2=6(18-△)
エカ=12-6=6
三角形エカオ
△×6÷2=3△
三角形アオイ+三角形エカオ=87
6(18-△)+3△=87
108-6△+3△=87
-3△=-21
△=7
Users viewing this question
are also looking at these questions 😉
