hi my name is fayaz ahmad i just want if someone explain more that ( -2+ 9/2 is equal 5/2 please......

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Let's start by writing -2 as a fraction:  -2/1, and multiply that by 2/2 to get -4/2, this way the denominator is the same as in 9/2, so -4/2+9/2 = (-4+9)/2 = 5/2