Matematika 1. 2 1/2 - 1 1/4 - 5/6 = ...2. 4 1/4 : 1 4/7 x 3 2/3 = ...​​

oranhowellulv – March 11, 2023

1. 2 1/2 - 1 1/4 - 5/6 = ...
2. 4 1/4 : 1 4/7 x 3 2/3 = ...​​

2 1/2 - 1 1/4 - 5/6

• = 5/2 - 5/4 - 5/6
• = 30/12 - 15/12 - 10/12
• = (30 - 15 - 10)/12
• = (15 - 10)/12
• = 5/12

4 1/4 : 1 4/7 × 3 2/3

• = (17/4 : 11/7) × 11/3
• = (17/4 × 7/11) × 11/3
• = 119/44 × 11/3
• = 1.309/132
• = 9 121/132

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