Question

1. solve 43x+67y=-24,67x+43y=24
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Answer 1

43x+67y=-24,67x+43y=24

Let them be equations 1 and 2

Add 2 and 1

67x+43y=24

43x+67y=-24

___________

110x+110y=0

110(x+y)=0

x+y=0

x=-y

Answer 2

Answer:

43x+67y = 24,67x+43y=24

=43x-67x= 24,43y-67y =24

= -24x= 24, -24y = 24