Assuming this is a mathematical expression or equation, the input "أ=2,ب=4.ل=15" appears to be defining variable values.
However, without a specific question or operation to perform with these variables, it's impossible to provide a definitive answer.
Please provide the full mathematical problem or question you'd like to solve using these values!
اذا كان لديك إجابة افضل او هناك خطأ في الإجابة علي سؤال أ=2،ب=4 . ل=15 اترك تعليق فورآ.