4x + 2y = 10_____2(2x + y) = 2(5)_____2x + y = 5_____y = 5 - 2x ------- eq (i)

5x - 4y = 6 ------ eq (ii)

5x - 4(5 - 2x) = 6 ------- Substituting 5 - 2x for y in eq (ii) 

5x - 20 + 8x = 6

5x + 8x = 6 + 20

13x = 26

x = , or  



y = 5 - 2(2) ------ Substituting 2 for x in eq (i)

y = 5 - 4

y = 

Solution set: 

You can do the check!! 



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