Question

exercise 3.3 and 4 please answering all questions

Answer 1

Solution:-

0.2x+0.3y=1.3...........(1)

0.4x+0.5y= 2.3.........(2)

multiply by 2 in eq(1)

0.4x+0.6y = 2.6........(1)

0.4+0.5y = 2.3..........(2)

_________________by sustracton 2 in 1

0.1y = 0.3

y = 0.3/0.1

y = 3,

puting y 's value in eq(1)

0.2x = 1.3- 0.9

x = 0.4/0.2

x = 2

(x,y ) = ( 2,3).ans