Question

solve by subtitution method
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Answer 1

Answer:

71x+37y=253                 ...(i)

37x+71y=287                 ...(ii)

add (i) and (ii) to get

108(x+y)=540

= x+y=5                         ....(iii)

substract (ii) from (i) to get

34(x-y)=-34

=x-y=-1                            ...(iv)

add (iii) and (iv)

x+y+x-y=5+(-1)

=2x=4

=x=2

putting the value of x in(iii) we get

2+y=5

y=3

hence x=2 and y=3

Answer 2

Answer:

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