16-04-2017
Mathematics

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How do you substitute?

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16-04-2017

y=x+5

Let's say we are given that x is equal to 5.

Thus, since x=5, we can replace x with the number 5.

So instead of y=x+5, we now have:
y=5+5=

Another example:

x=4+y
where y= 2
x=4+2

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