The expression multiplied by 1 stays the same so you use the communitive property to reorder the terms so now u have 14x
Answer:
Total number of notes is 11.
Step-by-step explanation:
Value is 100 rupees…
5x + 20y = 100 and x + y = 11 are the two equations.
We can simplify…
5x + 20 y - 5x - 5y = 100 - 55 = 45
15y = 45 so y = 3
x = 11 - y = 8
So, we have 8 notes of 5 rupees denomination and 3 notes of 20 rupees denomination.
I hope it helps you.
Yes if x=5 then 4(5)= 20 and 15+5=20
Decrease because you taking something off of something