![](data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" viewBox="0 0 72 71" width="72"></svg>)
Simple operation, 7 / 15 * 0.8 + 8 / 15 * 0.18
7/15*0.8+8/15*0.18
＝1/15x(7x0.8+8x0.18)
=1/15x(0.56+1.44)
=1/15x2
=2/15
Simple calculation: 36 * (1 / 18 * 1 / 12) = (), which is based on ()
1/6
Law of combination of multiplication
(1 / 6 + 1 / 12-1 / 18) × 36 = () with simple operation
Original formula = 1 / 6x36 + 1 / 12x36-1 / 18x36
=6+3-2
=7
If there is 36% left in 120, how can we calculate it,
It's very convenient to use a calculator, or you can calculate it directly
36/120=0.3=30%
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