Branches 5825

Parrots, a few of them flew around and sat down anyway. 3 on the dog's back. There are 29 parrots. There were 9 more sitting than flying. 6 more sat on the branches than on the grass.
How many parrots were still flying?
How many were sitting on the branches?
How much in the grass?

Correct answer:

k =  11
l =  10
t =  5

Step-by-step explanation:


l + 3 + k+t = 29
k+t+3 = 9 + l
k = 6 + t

k+l+t = 26
k-l+t = 6
k-t = 6

Row 2 - Row 1 → Row 2
k+l+t = 26
-2l = -20
k-t = 6

Row 3 - Row 1 → Row 3
k+l+t = 26
-2l = -20
-l-2t = -20

Row 3 - -1/-2 · Row 2 → Row 3
k+l+t = 26
-2l = -20
-2t = -10


t = -10/-2 = 5
l = -20/-2 = 10
k = 26-l-t = 26-10-5 = 11

k = 11
l = 10
t = 5

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