Mathematics
Junior High
Resolved
なんでここの△をわざわざ移動させて8aにかけているのでしょうか、?
x
① (4a-口b)=△=8a-5b が成り立つ
40÷A
40 ÷ 4 = Sa
DE D
4ax 1 = sa
40 = 80xA
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