(nežinomas) (archyvas)
1)Vejas is older than Egle. The age difference is 12 years, and total sum of their ages are 50 years. How old is Vejas and Egle?
a) Vejas age we indicate as X and Egle’s age we indicate as – Y
By given condition make the system.
b) from equation x-y=12 we express X:
c) this expression write in the equation x+y=50
d) solve this equation
e) calculate the value of X
f) we got solutions of the system of equation
z) Hence Vejas age is 31 and Egle 19.
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