Question

1/16x+1/15y= 9/20, 1/20x-1/27y= 4/45
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Answer 1

Answer:

0.95x+0.1037y=0.41667

Step-by-step explanation:

1/16x -1/20x +1/15y 1/27y=4/45-9/20

= 80x-40x/80+9y+5y/135= 16-81/180 (by taking L.C.M)

= 76x/80+14x/135=75/180

= 0.95x+0.1037y=0.41667

Answer 2

Answer:

here

1/16x+1/15y=9/20,

so

put x=1/4 and y=1/3

now we get

1/16(1/4)+1/15(1/3)

1/4+1/5=9/20

proved same like another equation

put same x=1/4 and y=1/3

now we get

1/20x-1/27y=4/45

so,

1/20(1/4)-1/27(1/3)

1/5-1/9=4/45

proved