From what should ( 5/21 divided 3/4) be subtracted to get 2/5
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Answer:
226/315 - 20/63 = 2/5
Step-by-step explanation:
5/21 ÷ 3/4 = 5/21 × 3/4 = 20/63
20/63 + 2/5 = LCM:315
20×5/63×5 = 100/315
2×63/5×63 = 126/315
100/315 + 126/315 = 100 + 126/315
=226/315
Answer: 226/315 - 20/63 = 2/5
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