Question

2. If x = a, y = b is the solution of the equation x - y = 2 and x + y = 4, then what is the value of a and b.
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Answer 1

$a - b = 2$

$a + b = 4$

-b to cut b

2a=6

a=3

a+b=4

3+b=4

b=4-3

b=1