Question

if x+ y = 10 and x - y = 5 find the value of x

Answer 1

Step-by-step explanation:

x+ y = 10

=>x=10-y----1

x-y=5

=>10-y-y=5 (from equation 1)

=>10-2y=5

=>-2y=5-10

=>-2y=-5

=>2y=5

=>y=5/2

=>y=2.5

x+y=10

=>x=10-y

=>x=10-2.5

=>x=7.5

Hope it is clear...

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