Given:
The expression is
.
To find:
The position of parentheses inserted in the expression to get the value 19
Step-by-step explanation:
We have,

Now,




There are more ways to apply the parenthesis, but we do not get 19.



And many more possibilities.
Therefore, the expression after inserting the parentheses is
.
Answer:
7x3=21
Step-by-step explanation:
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First
Mutliply -2 and -3
Then
Add 4+6+5
Finally
4+6=10
And then
10+5=15
Answer:
12 x 12 = 144
Step-by-step explanation: