Question

15x+14y=21; 14x+15y-29 then find the value of (x+y) and (x-y) plz dont spam its urgent i
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Answer 1

Answer:

x - y = -8

Step-by-step explanation:

15x + 14y = 21 ------- 1

14x + 15y – 29---------2

14x + 15y = 29--------3

Subtract 3 and 1

14x + 15y = 29

15x + 14y = 21

(-) (-) (-)

--------------------

-x + y = 8

Multiply by -1 on both sides

x – y = -8