Ответ:
-2 1/12
Пошаговое объяснение:
1/4( 2a - 4)- 1/3 (5b+6) = 1/2a - 1 - 5/3b - 2 = 1/2a - 5/3b - 3
при а =2 1/2, b= 3/15
1/2a - 5/3b - 3 = 1/2 * 2 1/2 - 5/3 * 3/15 - 3 = 1/2 * 5/2 - 1/3 - 3 = 5/4 - 1/3 - 3 = 15/12 - 4/12 - 3 = 11/12 - 3 = -2 1/12
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Ответ:
-2 1/12
Пошаговое объяснение:
1/4( 2a - 4)- 1/3 (5b+6) = 1/2a - 1 - 5/3b - 2 = 1/2a - 5/3b - 3
при а =2 1/2, b= 3/15
1/2a - 5/3b - 3 = 1/2 * 2 1/2 - 5/3 * 3/15 - 3 = 1/2 * 5/2 - 1/3 - 3 = 5/4 - 1/3 - 3 = 15/12 - 4/12 - 3 = 11/12 - 3 = -2 1/12