an appliance store sells a washer dryer combination for $1500 if the washer costs $200 more than the dryer find the cost of each
1 answer:
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To solve 
, we need to find a common denominator. If we multiply 
by 
, we get 
. The reason we can do this is because two over two is really just equivalent to 1, and multiplying a number times one equals the original number. So if you're subtracting from 
, you have
.