If quantity x is twice quantity y, then x − 2y = 0.
To prove that x – 2y = 0 when x is twice y, we need to express x in terms of y
To prove that x – 2y = 0 when x is twice y, we need to express x in terms of y.
Let’s start by saying that x = 2y (since x is twice y).
Substitute this value of x into the equation x – 2y = 0:
(2y) – 2y = 0
Simplify:
0 = 0
As we can see, the equation is true. Therefore, when quantity x is twice quantity y, x – 2y will always equal zero.
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