1/5 + 1/35 + 1/63 + 1/99 + 1/143 WITHOUT TAKING OUT LCM.
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Answer:
it is 5/39
Step-by-step explanation:
1/3*5 + 1/5*7 + 1/7*9 + 1/9*11 + 1/11*13
=1/2 [2/3*5 + 2/5*7 + 2/7*9 + 2/9*11 +2/11*13]
=1/2 {(1/3-1/5)+(1/5-1/7)+(1/7-1/9)+(1/9-1/11)+(1/11-1/13)}
cross out the numbers similar with different signs
=1/2 (1/3-1/13)
=1/2 (13-3/39)
=1/2* 10/39
=5/39
Answered by
0
Answer:
here is your answer 5/9
Plz mark me as brainliest
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