Two thirds

Find two-thirds of the number equal to two-thirds of 99

Correct result:

x =  99

Solution:

 2/3⋅ a=99  2a=297  a=2972=148.5  x=23⋅ a=23⋅ 148.5=99 \ \\ 2/3 \cdot \ a=99 \ \\ \ \\ 2a=297 \ \\ \ \\ a=\dfrac{ 297 }{ 2 }=148.5 \ \\ \ \\ x=\dfrac{ 2 }{ 3 } \cdot \ a=\dfrac{ 2 }{ 3 } \cdot \ 148.5=99

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