1.

If 47x + 31y = 18 and 31x + 47y = 60, then find the value of x+ y​

Answer»

Answer:

x+y=1

Step-by-step EXPLANATION:

let 47x+31y=18-equation 1

let 31x+47y=60-equation 2

add equation 1 from equation 2

=78x+78y=78

=78(x+y)=78

=x+y=78/78

=x+y=1

HOPE it helps you!



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