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The GCF of 42 and 84 is 42.
1680
42 x 84 = 3528
The LCM of 12 and 42 is 84.
They are 42 and 84.
84.
84 divided by 2 is 42
42 x 42 = 1764 42 + 42 = 84
42 ÷ 100 × 84 = 35.28
100*42/84 = 50%
hcf = 42, lcm = 84.
42/50 = 84/100 84%