Ответ:
x+79/8=31/4+9/2=31/4+18/4
x+79/8=49/4
x=49/4-79/8=98/8-79/8
x=19/8
(19/8+79/8)-9/2=31/4
98/8-36/8=31/4
62/8=31/4
31/4=31/4
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Ответ:
x+79/8=31/4+9/2=31/4+18/4
x+79/8=49/4
x=49/4-79/8=98/8-79/8
x=19/8
(19/8+79/8)-9/2=31/4
98/8-36/8=31/4
62/8=31/4
31/4=31/4