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**1. Homework Statement**

Three equations (as seen in the relevant equations section) have a y value of 0 when they initially begin at x=0. If x is measured in complete days, how many days will it be before these three functions once again share the y=0 value?

**2. Homework Equations**

y = sin (2piex/23)

y = sin (2piex/28)

y = sin (2piex/33)

**3. The Attempt at a Solution**

well these equations must all equal 0, therefore y = sin (2piex/23) = sin (2piex/28) = sin (2piex/33) = 0

as to how to manipulate that to get the desired answer, iam not too sure since ive never done it with three equations before.

i'd appreciate any help :)