Question

if x+y= 7 and x-y = 3 find xy​

Answer 1

Answer:

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Step-by-step explanation:

x+y=7

x-y=3

by elimination method

2y=4

y=4/2

y=2

x+2=7

x=7-2

x=5

xy=(5)(2)

xy=10

x=5,y=2