Answer:
The answer is A I suppose
Answer:
Step-by-step explanation:
90 by 20%
10%=9
20%=18
90-18=62
Hope u understand
Answer:
Step-by-step explanation:

Answer:
Step 3
Step-by-step explanation:
7( 8.5-1.5) +8 ÷2
PEMDAS
Parentheses
7*7 +8 ÷2
Then multiplication and division from left to right
49 +8 ÷2
We are still on multiplication and division
49+4
So step 3 is the first mistake