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63 x 5 = 315
5/7 x 4/9 = 20/63Multiply across: 5 x 4 = 20, and 7 x 9 = 63 giving the answer of 20/63
35 = 5 x 7 63 = 9 x 7 '7' is the only common factor.
6x6x5x6x3x2x3 in exponent form is 2 x 32 x 5 x 63
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