lcm(7, 10, 8, 49, 70) = 1960
7 = 7
10 = 2 x 5
8 = 2^3
49 = 7^2
70 = 2 x 5 x 7
lcm = 2^3 x 5 x 7^2 = 1960
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The LCM of 7 and 49 is 49.
lowest common denominator= 70 therefore; 5/7 + 7/10 = 50/70 + 49/ 70 = 99/70= 1 and 29/70 5/7 - 7/10 = 50/70 - 49/70 = 1/70
7/10
7/10 x 70 = 49
The LCM is: 70