if x=5/2,y=-3/4 then find (x+y)÷(x-y)
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Step-by-step explanation:
Because
=x:y=3:4
=(x/y)=(3/4).....(1)
∴ (7x+3y):(7x−3y)=(7x+3y)/(7x−3y)
=[7(x/y)+3]/[7(x/y)−3]....(on dividing numerator and denomenator by y)
=[7(3/4)+3]/[7(3/4)−3)]
=[(21/4)+3]:[(21/4)−3]....by using equation (1)
=(33/4)/(9/4)
=(33/4)×(4/9)
=(11/3)
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