Question

Please tell me how to get the answer

Answer 1

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Because if x=8 and y=3 then 3x and 8y are equal. So if we are trying to find an equal to 40y then you need to find what 40 times y equals first. So, 40x3=120. If we substitute x with 8 and multiply it with 15 then you get 120 so it’s equal.