Answer:
15
Step-by-step explanation:
x - y = 10, then x = 10 + y
x + y = 20
substitute for x:
10 + y + y = 20
2y = 10
y = 5
x = 10 + 5 = 15
You could not do that then you would gey 110.25 which is what is not the question
Step-by-step explanation:
this is the answer
Answer:
168
Step-by-step explanation:
you would times 3.75 by 82 and subtract the answer from 2071.50 and get 1764 then divide 1764 by 10.50 and get 168
When dividing three real numbers the order can effect the answer.
Example:
8:4:2
1. 8:4:2=(8:4):2=2:2=1;
2. 8:4:2=8:(4:2)=8:2=4.
As you can see the results are different.
Answer: It is not true.
