Question

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Answer 1

Answer:

0.4x+0.3y=2.7............×2

0.7x-0.2y=0.8..............×3

0.8x+0.6y=5.4

2.1x-0.6y=2.4

then both equation add

2.9x=7.8

X=2

y=3

Answer 2

Hi there !!

Look at the attachment

X=2 and Y= 3

Thankyou :)