So what we don't know are the amounts for each investment. Since the problem wants you to indicate both in terms of x, let's first say that the amount of the first investment is x. Then,

This would bewhat is 7% of the first investment in terms of x?

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If x dollars goes toward the first investment, then 22,000 - x has to go towards the second, because the total amount is 22,000. So 2% of the 2nd investment iswhat is 2% of the second investment in terms of x?

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The equation would thus bewrite an equation that says the sum of your last two answers in equal to $920

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Can you take it from here and solve for x?

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