Answer:
Division then subtraction
Step-by-step explanation:
You divide the $100 to 4 people, which means they each get $25. Then you subtract $15 from $25
Not sure about the other one
Answer:
(x, y) = (3, 5)
Step-by-step explanation:

Solving by elimination here again, there are 2 good options available. Either multiply the whole bottom equation by -1 to cancel the x, or by 2 to cancel the y. I'll do the latter:

Add from top to bottom:

Now, with the value of x, solve for y in either of the equations. I'll choose the second one here:

(x, y) = (3, 5)
The answer is 1.25. yes it is rational because you can write it as a fraction
12. x= 4
13. x= 4
14. x= -1
Check the steps in the picture above
Answer:
another fractioon for 4/10 would be 2/5 or 8/20
Step-by-step explanation: