If x + x + x = y, then x - y =
Explanation on how to get answer
SAT math level 1 question?
2016-12-20 11:25 am
回答 (4)
2016-12-24 8:23 am
If x + x + x = y, then x - y = -2x
2016-12-20 6:14 pm
y = 3x
x - 3x = - 2x
x - 3x = - 2x
2016-12-20 1:25 pm
x + x + x = y
2x + x = y (Do NOT combine all the x's into 3x!!!!)
2x = y - x
2x = -1(x - y)
-2x = x - y. Final.
2x + x = y (Do NOT combine all the x's into 3x!!!!)
2x = y - x
2x = -1(x - y)
-2x = x - y. Final.
2016-12-20 11:33 am
Note: x + x + x = y is the same as 3(x) = y
So just substitute 3(x) for y in the following: x - y
So we compute
= x - 3(x)
= -2(x)
in terms of x.
So just substitute 3(x) for y in the following: x - y
So we compute
= x - 3(x)
= -2(x)
in terms of x.
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