Question

x + x = 10
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3 2

e  x sobre 3 e x sobre 2

Answer 1

$\dfrac{x}{3} + \dfrac{x}{2} =10\to~~~mmc=6\\\\ 2x+3x=60\to\\\\ 5x=60\to\\\\ x= \dfrac{60}{5} \to\\\\ \boxed{x = 12}$

Answer 2

x + x =10 (mmc de 2 e 3=6)
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3 2

2x + 3x =60 (elimina os
--- ---- --- denominadores)
6 6 6
2x+3x=60
5x=60
x=60/5
x=12

espero ter ajudado