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Question

For solving each pair of equations, use the method of eliminations by equating coefficients:

5y2x3=8

y2+5x3=12


Solution

5y2x3=8

x3+5y2=8 ---(1)

y2+5x3=12

5x3+y2=12 ----(2)

(1)× 5

5x3+25y2=40----(3)
5x3+y2=12 ----(2)

After solving above equation

13y=52

y=4
x3+5(4)2=8  

x3=810

x=6

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