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Q: What is xy-2 when x equals 5 and y equals 4?

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5 x 4 equals 4 x 5 is commutative property.

If X+Y=5;X=4, then x=4 and y=1

If: x+(-5) = 4 Then: x = 9

(8 + 4) x 5...

x=4 y=5 9x+7y=?? Replace: 9(4)+7(5)= 71

x2yz3 = 74xy2 = 75xyz = ?Since xy2 = 75, we have:x2yz3 = 74 multiply by 75 to both sides(x2yz3)(xy2) = (74)(75)x3y3z3 = 712(x3y3z3)1/3 = (712)1/3xyz = 74

x = 80

commutative

3 * 3 * 5 * x * y * y = 45xy2

No, 4 x 5 equals 20.

5*-4*-3 = 60

In x/5 = -4, x=-20x/5 = -4multiply each side by 5:x = -20

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