(15×1/4)+(2/3)×(7×3/4)-(6×2/3)=?
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Step-by-step explanation:
15/4+2/3×21/4-4
=42/12+15/4-4
=42/12+45/12-4
=87/12-4/1
=87/4-16/4
=71/4
=17.75
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