(-7×5/12+12×1/4):3×2/9=
(-89/12+147/12):29/9=
58/12:29/9=
58/12×9/29=
6/4=1.5
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(-7×5/12+12×1/4):3×2/9=
(-89/12+147/12):29/9=
58/12:29/9=
58/12×9/29=
6/4=1.5