Question

Can you solve this??

Answer 1

Answer:

20

Step-by-step explanation:

first lets apply PEMDAS

$9 - (9 \div 9) + 9 - (9 \div 9)$

9 ÷ 9 = 1

1 × (-) = -1

9-(-1)= 10

( than do the same for other side )

and than you get

$10 + 10$

the answer is 20

Answer 2

$9-\underline{9\div 9} + 9 - \underline{9 \div 9}\implies 9-\underline{1}+9-\underline{1}\implies 8+9-1\implies 17-1\implies 16$

recall PEMDAS, MD are before AS, and both are performed from left to right.