Question

1.8*x+1.2*y=4 6*y +9*x=3​

Answer 1

Answer:

1.8x+1.2y=4 mutiply with 10⇒1

9x+6y    =3 multiply with 2⇒2

=18x+12y=40⇒1

=18x+12y=6⇒2

(-)   (-)       (-)

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0=34

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