1.

3. If 10x + 5y = 15 and 5x + 10y = 45 What is the value of x-y?AJ 6 BJ -6 03 D136​

Answer» ONG>ANSWER:

-6

Step-by-step explanation:

10x+5y=15

5(2x+y)=15

2x+y=3‐---1

5x+10y=45

5(x+2y)=45

x+2y=9‐--------2

1-2

x-y=3-9

x-y=-6



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