Need help with these maths questions

[From: ] [author: ] [Date: 12-04-25] [Hit: ]

With these numbers choose TWO cards which SUBTRACT to give 9
-4 +6 -2 +1 -3 -6

5(x+y) + 3(y-x) SIMPLIFY

thanks

6 - -3 = 6 + 3 = 9

5x + 5y + 3y - 3x --> 2x + 8y

I know the second one
5x+5y+3y-3x
5x-3x=2x
5y+3y=8y
Simplified answer= 2x+8y

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