7 out of 13 + 16 out of 9 + 6 out of 13 - 8 out of 9,

7 out of 13 + 16 out of 9 + 6 out of 13 - 8 out of 9,


7 out of 13 + 16 out of 9 + 6 out of 13 - 8 out of 9
=(7/13+6/13)+(16/9-8/9)
=1-8/9
=1/9;
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How to calculate 4 * (25 * 68 + 25 * 28)?


4*(25*68+25*28)
=4×25×68+4×25×28
=100×68+100×28
=6800+2800
=9600



9 and 2 / 5 - (3 / 7 + 0.4)


9 and 2 / 5 - (3 / 7 + 0.4)
=47/5-3/7-2/5
=(47/5-2/5)-3/7
=45/5-3/7
=9-3/7
=8 and 4 / 7
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