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If 3 + 4 = 7, 4 + 3 = 9, Find the value of (x-y).​
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If 3 + 4 = 7, 4 + 3 = 9, Find the value of (x-y).​

User RoiEX
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1 Answer

5 votes

Given:

Consider the equations are


3x+4y=7


4x+3y=9

To find:

The value of x-y.

Solution:

We have,


3x+4y=7 ...(i)


4x+3y=9 ...(ii)

Subtracting (i) from (ii), we get


4x+3y-(3x+4y)=9-7


4x+3y-3x-4y=2


(4x-3x)+(3y-4y)=2


x-y=2

Therefore, the value of x-y is 2.

User Erik Iverson
by
3.7k points
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