(9/2-12/5) ÷ 0.7 + 0.01 of 225
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= Take out the LCM of 2 and 5 = 10
= (9×5/2×5 - 12×2/5×2) ÷ 0.7 + 0.01 of 225
= (45/10 - 24/10 = 21/10) ÷ 0.7+0.01of 225
= 21/10 ÷ 0.7 + (0.01 × 225 = 2.25)
= 21/10 (21÷10 = 2.1) ÷ 0.7 + 2.25
= 3 + 2.25 = 5.25
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