9y²/11r² x 121r²/81y, simplify the r² first:
9y²/11 x 121/81y, then simplify the y:
9y/11 x 121/81, now join these two:
(9y * 121) / (11 * 81). This results in:
1089y / 891, which can be simplified as:
11y / 9
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9y²/11r² x 121r²/81y, simplify the r² first:
9y²/11 x 121/81y, then simplify the y:
9y/11 x 121/81, now join these two:
(9y * 121) / (11 * 81). This results in:
1089y / 891, which can be simplified as:
11y / 9