In many fonts the number 1 has a little bit that goes down on the left side from its top. If this is written larger then the number 1 could be confused with number 7. To avoid that, the number 7 is crossed.
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7 less than a number is an algebraic expression. Given the number the expression can be evaluated. 7 is less than a number is a statement in the form of an inequality. It is true for some values of the number and not for others.
Some number x is added to 7 for every number in the sequence. So, the second number is 7+x, the third number is 7+2x... So the tenth number is 7+9x = 34. Solve for x, x=3. The fifth number is 7+4x, which is 7+(4*3), which is 19
It is: 4 times (7+1) = 32
6/7 of 217
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