KittehMeow6039
09.07.2019 •
Mathematics
On a farm there are horses and chickens. there are total of 40 heads and 146 legs. how much horses are there in the farm?
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Ответ:
A) h + c = 40
B) 4h + 2c = 146 then multiplying A) by -2
A) -2h -2c = -80 then adding both equations
2h = 66
There are 33 horses and 7 chickens
DOUBLE CHECK
33*4 + 7*2 = 132 + 14 = 146 legs
Ответ: