Peter and Paul

Peter and Paul together have 26 years.
Four years ago, Paul was twice older than Peter.
How much is Paul and how much Peter?

Correct result:

a =  16
b =  10

Solution:

a+b=26
(a-4)=2(b-4)

a+b=26
(a-4)=2•(b-4)

a+b = 26
a-2b = -4

a = 16
b = 10

Our linear equations calculator calculates it.

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