X = 6 ?
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Addition/Subtraction and. Multiplication/ Division ... So checking one operation with its opposite is a good way to help verify your answer.
17,19,23 are the prime numbers
Answer:
Two $10
Step-by-step explanation:
He had a $6 off coupon so he had to pay $21.65 - $6 = $15.65
If he gave 2 bills and recived $4.35 in return the denominations of the bills must be two $10