Orchard 4337

A total of 18 pears and apple trees grow in the orchard. Pears are two times less than apple trees. How many pears and how many apples?

Correct answer:

a =  6
b =  12

Step-by-step explanation:


a+b=18
a=b/2

a+b = 18
2a-b = 0

Pivot: Row 1 ↔ Row 2
2a-b = 0
a+b = 18

Row 2 - 1/2 · Row 1 → Row 2
2a-b = 0
1.5b = 18


b = 18/1.5 = 12
a = 0+b/2 = 0+12/2 = 6

a = 6
b = 12

Our linear equations calculator calculates it.



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