Question

Andra are 12 ani.iar mama ei 39 de ani.peste cati ani varsta mamei va fi de doua ori mai maredecat varsta lui andra

Answer 1

(12+x)*2=39+x
24+2x=39+x
2x-x=39-24
x=15

Answer 2

A=12. Peste x ani M=39. A=12+x }M=2A M=39+x 39+x=2•(12+x) 39+x=24+2x|-x 24+x=39|-23 x=15 Peste 15 Ani