1)x + 1 целых 3/4 = 5 целых 1/3 2)x - 4целых 5/8 - вопрос №44432141134513245831232 от kostinak37 09.07.2020 11:30

Question

Математика: 1)x + 1 целых 3/4 = 5 целых 1/3 2)x - 4целых 5/8 = 3 целых 1/2 3) 2 целых 5/7 + x = 4 целых 1/7 4)x - 2 целых 3/5 = 1 целых 11/15

kostinak37 · Answer

1) х + 1 3/4 = 5 1/3 2) х - 4 5/8 = 3 1/2
х = 5 1/3 - 1 3/4 х = 3 1/2 + 4 5/8
х = 5 4/12 - 1 9/12 х = 3 4/8 + 4 5/8
х = 4 16/12 - 1 9/12 х = 7 9/8
х = 3 7/12 х = 8 1/8

3) 2 5/7 + х = 4 1/7 4) х - 2 3/5 = 1 11/15
х = 4 1/7 - 2 5/7 х = 1 11/15 + 2 3/5
х = 3 8/7 - 2 5/7 х = 1 11/15 + 2 9/15
х = 1 3/7 х = 3 20/15
х = 4 5/15
х = 4 1/3