Question

9. Use the correct order of operations to calculate
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Answer 1

Let's use BODMAS (Bracket Of Division Multiplication Addition Subtraction) to solve these problems.

(a) 2+1/2÷1/3-1/5

= 2+(1/2÷1/3)-1/5

1/2÷1/3 = 1/2*3/1 = (1*3)/( 2*1) = 3/2

= 2+3/2-1/5

= 2+(3/2)

We need to make the denominators same for adding:

LCM of 1 & 2 = 2

2 = 2/1 = (2*2)/(1*2) = 4/2

= 4/2+3/2 = (4+3)/2 = 7/2

= 7/2-1/5

= 35/10-2/10

= 33/10

Similarly, we can do others also.

(b) 1/3÷1/2+1/4

= 1/3÷1/2 = 2/3

= 2/3+1/4

= 8/12+3/12

= 11/12

(c) (3+1/2)÷(2-1/2)

3+1/2

= 3/1+1/2

= 6/2+1/2

= 7/2

2-1/2

= 2/1-1/2

= 4/2-1/2

= 3/2

= 7/2÷3/2

= 7/2*2/3

= (7*2)/(2*3)

= 14/6

= 7/3

(d) 5 1/2*(4 1/2+7/2)÷2 1/3

= 11/2*(9/2+7/2)÷7/3

= 11/2*16/2÷7/3

= 11/2-48/14

= 77/14-48/14

= 29/14

Please mark my answer as brainliest.

Answer 2

Answer:

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