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2/7X 9/+18 X 15
(2 7 x 9) + (1 8 x 1 5) = 21
1 8) x 15 =
(27/x/9/+
27 x (9 + 18) x 15 =
2.7 x (9 + 1 8 X 1 5)


27X 918 X 15 2 7 X 9 1 8 X 1 5 21 1 8 X 15 27x9 27 X 9 18 X 15 27 X 9 1 8 X 1 5 class=