Mathematics
Junior High
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合ってますか?
(1) 7bc=a [c]
(2) 5a-66=30 [a]
a
[C= 7e
6.h+30
( a=5
(3) m=450 (a]
atb
2
(4) =2(a+b) [6]
(a--b-2m]
(b=a--
2
次の
レぶと
も曲
ー当田
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