Question

Jack and Ruth went to an math amusement park. It was compulsory there to solve the given math problem to enter into the park.
Simplify: $9^2÷9+2\times 5-3+7$

Answer 1

Concept: According to PEMDAS, we need to first solve parenthesis then we solve exponent then multiply, then divide, then add, and then subtract the numbers.

$9^2÷9+2\times 5-3+7=\frac{81}{9}+2\times 5-3+7=\frac{81}{9}+10-3+7=9+10-3+7$
Here, we can see that addition and subtraction are together hence, we will solve both from left to right.
$=9+7+7=23$

$\therefore 9^2÷9+2\times 5-3+7=23$