Answer
N-9=-18
Move the -9 to -18 and add those cuz if there’s two negative u have to add
Add 9
The answer to your question is 30+4.+10+4
Answer:40 square yards
Step-by-step explanation:
Given
Floor area A=10 square yards
Red tile costs
per square yards
White tile costs
per square yards
Total money spent=
on tiles
Suppose red tiles cover an area of
square yards
So, we can write

Red tiles cover an area of 40 square yards
Answer:
$16
Step-by-step explanation:
He had $16 so he had spent all of it due to the question asked.