The difference of a number and seven is x - 7. So twice that, would be:
2(x - 7)
Simplify the expression
Answer - Zero
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Answer:
2 and 6
Step-by-step explanation:
Answer: 5
List out the numbers from 1 to 50. Then go through that list and circle any numbers that have 9 in them. Those numbers are:
9, 19, 29, 39, 49
So there are 5 houses with 9s painted
