Answer:
2/21
Explanation:
5m=9/21+3/63
5m=27/63+3/63
5m=30/63
5m=10/21
m=10/21/5
m=10/21 x 1/5
m=2/21
sry if wrong
21(5m - 3) = 63*9
105m - 63 = 567
105m = 630
m = 6
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