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Finding RAM of an unknown element from mass Watch

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    Please help me with this:
    2.07g of element Z with bromine to form 3.67g of a compound with an empirical formula ZBr2. Find the RAM of element Z.
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    You know the molar mass of the Br2 ( by calculation from the periodic table). And you know the relative proportions of Br2 and Z in the compound.
    The RAM of Z must be mass Br2 x 2.07 / (3.67-2.07)
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    Basically you have an algebra question with very little chemical knowledge required.
    Chemically you only need to understabd the formula, and that you can get the mass of Br from the periodic table.
 
 
 
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