Question

FRAME THE LINEAR EQUATION IN 2 VARIABLES FOR THE FOLLOWING:--
The number of heads and number of legs of deer and human were
counted it was found that there were 39 heads and 132 legs.



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Answer 1

Answer:

Step-by-step explanation:

let x be the number of human

let y be the number of deer

number of heads   x + y = 39

number of legs      2x +4y = 132  

[ becouse x human have 2x legs and y deers have 4y legs ]

divide  second eqn by 2 we get

                       x +2y =66

                       x  + y  =39

subtract                 y =27  

so                           x =12