Пошаговое объяснение:
(х - 1 8/9) + 3 7/9 = 4 4/9,
х - 1 8/9 = 4 4/9 - 3 7/9,
х = 1 8/9 + 4 4/9 - 3 7/9,
х = 2 5/9,
х - (3 3/8 + 1 7/8) = 5 1/8,
х - 3 3/8 - 1 7/8 = 5 1/8,
х = 3 3/8 + 1 7/8 + 5 1/8,
х = 9 11/8,
х = 10 3/8
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5 - 2 4/11 = 4 11/11 - 2 4/11 = 2 7/11,
8 2/9 - 2 4/9 = 7 11/9 - 2 4/9 = 5 7/9,
7 4/15 - 3 11/15 = 6 19/15 - 3 11/15 = 3 8/15
1)22:11*2=4см ширина;
2)(22+4)*2=52 см периметр прямоугольника