The value of the expression 12 - 4 × 3 / 2 + 9 is ________.

Solution:

Given, the expression is 12 - 4 × 3 / 2 + 9

Using BODMAS rule,

12 - 4 × 3 / 2 + 9 = 12 - 4 × (3/2) + 9

= 21 - 4 × (1.5)

= 21 - 6

= 15

Therefore, the value of expression is 15.

Example:

The value of the expression 21 - 3 × 5 / 2 + 3 is ________.

Solution:

Given, the expression is 21 - 3 × 5 / 2 + 3

Using BODMAS rule,

21 - 3 × 5 / 2 + 3 = 21 - 3 × (5/2) + 3

= 21 + 3 - 3 × (2.5)

= 24 - 7.5

= 16.5

Therefore, the value of expression is 16.5.

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The value of the expression 12 - 4 × 3 / 2 + 9 is ________.

Summary:

The value of the expression 12 - 4 × 3 / 2 + 9 is 15.