Вопрос школьника по предмету Математика
а-15•30=320
150•x•3=1800
12090-x=3090:30
Пожалуйста решите (можно по одному)
Ответ учителя по предмету Математика
1)
a-15*30=320
a=320+450=770
Ответ: 770.
2)
150x*3=1800
x=1800/450=4
Ответ: 4.
3)
12090-x=3090/30
x=12090-103=11987
Ответ: 11987.
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