Предмет: Математика, автор: ааа388

знайди суму розвязків рівнянь 240×a=816+24×6 ; 90×8:х=60; 356 -(у+87)=178

Ответы

Автор ответа: tatianagri2013

0

240×a=816+24×6
240*а=816+144
240*а=960
а=960 :240
а=4

90×8:х=60;
720:х=60
х=720:60
х=12

356 -(у+87)=178
у+87=356-178
у+87=178
у=178-87
у=91

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