Simplify,
5x^-6y^-1 • 2yx^-2 • 2w^7w^-9
Use only positive exponents in your answer

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.

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54liters ueafhkibeisbf

x= 25/4.

is your answer.

step-by-step explanation: