Question

solve the following pair of equations :- 5y= -2xy , 8x - 3y = 5xy​

Answer 1

Answer:

x=5/2

y=40/31

find the sum done in the attachment

Answer 2

GivEn:

• 5y = -2xy
• 8x - 3y = 5xy

To do:

• Solve the pair of equations.

Solution:

• Let's use transposing method to solve it.

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« Now, Solving the pair of equations,

• Let's find x first,

→ 5y = -2xy

→ -5y = 2xy

→ -5y/y = 2x

Cancelling y,

→ 2x = -5

→ x = -5/2

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« Now, Let's solve the other equation to find y,

• Putting the value of x in the equation,

→ 8x - 3y = 5xy

→ 8(-5/2) - 3y = 5(-5/2)y

→ -20 - 3y = -25y/2

→ -20 = 3y - 25y/2

→ -20 = -19y/2

→ y = 40/19

∴ Hence, Value of x is -5/2 & value of y is 40/19.

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« Now, Let's verify,

→ -5y = 2xy

→ -5(40/19) = 2(-5/2) (40/19)

→ -10.52 = -10.52

∴ Hence, Verified!