31x +43y =117 and 43x+ 31y=105, then (x+y) is?
Answers
Answered by
3
Answer:
x+y=3
Step-by-step explanation:
add both equations
74x+74y= 222
x+y=3
Answered by
1
Answer: you can do it by substitution methord x+y=3
Step-by-step explanation:
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