27/4
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3/4 ÷ 4/9 = 3/4 × 9/4 = (3×9)/(4×4) = 27/16 = 1 11/16
9/12 = (3×3)/(4×3) = 3/4
5 + 4*(3-2) = 9(5 - 4)*3^2 = 9 - 5 + 4 * 3 + 2 = 9
9 - 3(2x - 4) 9 - 6x - 12 6x - 3
347/36 or 9 23/36addition of mixed fractions4 3/4 = [(4 * 4)+3]/4 = (16+3)/4 = 19/44 8/9 = [(9 * 4)+8]/9 = (36+8)/9 = 44/94 3/4 + 4 8/9:= 19/4 + 44/9= (171 + 176)/36= 347/36 or 9 23/36