Автор - katiamaslova20

1) 9б+6б-15=615
2) 2а+123а+97=472
3) 17x-x+5x-19=170
4) 73y-y-22y+40=190

Ответ

Автор - sSL1Der
1. 15б=630  б=42
2. 125а=375 а=3
3. 21х=189 х=9
4 50у= 150 у=3

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