Решите уровнение; а ) 8 3/4 - x = 3 5 /16 ; б ) x : 7 /15 = 15 /28 ; в ) x - 4 3 /7 = 3 5...

Question

Решите уровнение; а ) 8 3/4 - x = 3 5 /16 ; б ) x : 7 /15 = 15 /28 ; в ) x - 4 3 /7 = 3 5 /6; г ) (x- 2 7/8)+3 5/6=4 2/3;

Answer 1

8 3/4 - Х = 3 5/16
Х = 8 12/16 - 3 5/16
Х = 5 7/16
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Х : 7/15 = 15/28
Х = 15/28 • 7/15
Х = 1/4
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Х - 4 3/7 = 3 5/6
Х = 3 5/6 + 4 3/7
Х = 3 35/42 + 4 18/42
Х = 7 53/42
Х = 8 11/42
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( Х - 2 7/8 ) + 3 5/6 = 4 2/3
Х = 4 2/3 + 2 7/8 - 3 5/6
Х = 4 16/24 + 2 21/24 - 3 20/24
Х = 6 37/24 - 3 20/24
Х = 3 17/24