Expression Simplification Examples 3
In this class, We discuss Expression Simplification Examples 3.
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The reader should have prior knowledge of expression evaluation rules. Click Here.
Example 1:
What mathematical operation should come in place of ‘?’
2 ? 6 – 12 ÷ 4 + 2 = 11
a) + b) – c) * d) ÷
Solution:
From the rules of expression, the division first
2 ? 6 – 3 + 2 = 11
2 ? 6 = 11 + 3 – 2
2 ? 6 = 12
Replace ? with multiplication
Try to solve the example based on the rules and the operators provided in the answers.
Example 2:
45 – [ 28 – { 37 – (15 – *)}] = 58
The value of * =?
a) -29 b) -19 c) 19 d) 29
Solution:
First, solve the expression in ()
45 – [ 28 – { 37 – 15 + *}] = 58
45 – [ 28 – { 22 + *}] = 58
Now, evaluate the expression in {}
45 – [ 28 – 22 – *] = 58
45 – [ 6 – *] = 58
45 – 6 + * = 58
39 + * = 58
we get * = 19
Example 3:
The below diagram shows the third example