Question

if 5xa+4y=13 and 4x+5y=14 find the value if (x-y)
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Answer 1

Answer:

Given -

5x + 4y = 14 --- (1)

and

4x + 5y = 13 --- (2)

Multiply (1) by 5 and multiply (2) by 4 to solve for x

25x + 20y = 70 --- (3)

16x + 20y = 52 --- (4)

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9x = 18 [by subtracting (4) from (3)]

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=> x = 2

substituting this in (1)

5(2) + 4y = 14

y = (14 - 10)/4

=> y = 1

Therefore x - y = 2 -1 = 1

Answer 2

Answer:

x=1 and y =2 because 4*1=4 +5*2=10

4+10=14