Question

if 13 x + 19 Y is equal to 90 and 19 X + 13 Y is equal to 70 then X + Y is equal to​

Answer 1

Answer:

13x+19y=90

19x+13y=70

32x+32y=160

32(x+y)=160

x+y=160/32

x+y=5

Answer 2

Answer:

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