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Answer: Choice B: 10 and 7
Explanation:
x + 4 = 2y
x - 7 = 3
first you have to Substitute the value of X
x+4=2y
X=10
Next put it in an equation
10+4=2y
Solve
For Y you get 7
(x,y) = (10,7)
Check the solution
10+4=2×7
10-7=3
Simplify
14=14
3=3