Question 1107925
let x be marich's age and y be krisfel's age
:
x = y + 20
:
(y + 20) + 7 = 3(y+7)
:
y + 27 = 3y + 21
:
2y = 6
:
y = 3
x = 3 + 20 = 23
:
Marich's age is 23 and Krisfel's age is 3
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:
23 + 7 = 3(3+7)
:
30 = 3 * 10 = 30
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