Ответ:
Пошаговое объяснение:
1. 3/4 - х = 1/2 + 2/5
1. 15/20 - х = 10/20 + 8/20
1. 15/20 - х = 18/20
х = 1. 15/20 - 18/20
х = 35/20 - 18/20
х = 17/20
0,8 + (х - 3/4) = 37/40
8/10 + (х - 3/4) = 37/40
32/40 + (х - 30/40) = 37/40
х - 30/40 = 37/40 - 32/40
х - 30/40 = 5/40
х = 5/40 + 30/40
х = 35/40
х = 7/8
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Ответ:
Пошаговое объяснение:
1. 3/4 - х = 1/2 + 2/5
1. 15/20 - х = 10/20 + 8/20
1. 15/20 - х = 18/20
х = 1. 15/20 - 18/20
х = 35/20 - 18/20
х = 17/20
0,8 + (х - 3/4) = 37/40
8/10 + (х - 3/4) = 37/40
32/40 + (х - 30/40) = 37/40
х - 30/40 = 37/40 - 32/40
х - 30/40 = 5/40
х = 5/40 + 30/40
х = 35/40
х = 7/8