Question

What is the value of x in the equation x – y = 30, when y = 15?

4

8

80

200

Answer 1

its 200

Explanation:

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Answer 2

Add y to both sides of the equation
x - y = 30
x - y + y = 30 + y
x = 30 + y

Now, for y = 15
x = 30 +15
x = 45

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