37-(4×а)=9
(4×а)=37-9
4×а=28
а=28÷4
а=7
проверка:
37-(4×7)=9
9=9
Ответ: а=7
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Verified answer
37-(4×а)=9
(4×а)=37-9
4×а=28
а=28÷4
а=7
проверка:
37-(4×7)=9
9=9
Ответ: а=7