Ответ:
Пошаговое объяснение:
а) 5 2/15+2 7/15 = ( 5 + 2 ) + ( 2/15 + 7/15 ) = 7 + 9/15 = 7 + 3/5 = 7 3/5
б) 3 1/3+2 2/3 = ( 3 + 2 ) + ( 1/3 + 2/3 ) = 5 + 3/3 = 5 + 1 = 6
в) 144/у+20=4
144/у = 4 - 20
144/у = -16
144 = -16у
-16у = 144
у = - 9
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Verified answer
Ответ:
Пошаговое объяснение:
а) 5 2/15+2 7/15 = ( 5 + 2 ) + ( 2/15 + 7/15 ) = 7 + 9/15 = 7 + 3/5 = 7 3/5
б) 3 1/3+2 2/3 = ( 3 + 2 ) + ( 1/3 + 2/3 ) = 5 + 3/3 = 5 + 1 = 6
в) 144/у+20=4
144/у = 4 - 20
144/у = -16
144 = -16у
-16у = 144
у = - 9