Question

eliminate or substitute 60a+240b=4 and 100a+200b=25/6​

Answer 1

Answer:

(60a+240b=4)5

(100a+200b=25/6)3

=300a+1200b=10

300a+600b=25/2

600b=10-25/2

1200b=-15

b=-1)80

60a+240×1/80=4

60a+3=4

a=1/60