11/5+4/21 of 42-18/5÷25/45
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Answer:
we follow the BODMAS rule :
B - bracket
O - of
D - division
M - multiplication
A - addition
S - subtraction
So,
as there is no bracket, we go with Of first :
11/5+4/21 of 42-18/5÷25/45
= 11/5 + 8 - (18/5)/(25/45)
= 11/5 + 8 - 162/25
= 84/5
= 16.8 ≈ 17
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