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In the equation x+y=4, what is the value of x if y=2?

Sagot :

You just need to substitute the value of y=2 to x+y=4.
So,
 x + 2 = 4
 x = 4 -2   (Addition property of equality, a.k.a. transpose)
 x = 2
if the y is equals to 2 you just minus 4 by 2 and you got 2 so 

x is equals to 2