Casey is six times as old as Ralph. In two years, she will be four times as old as Ralph. How old is each of them now?
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<u>The overall </u><u>algebraic expression</u><u> will be: </u><u />
Definition of algebraic expression -
An expression obtained by a finite number of the fundamental operations of algebra upon symbols representing numbers.
Five times the sum of a number and eleven, divided by three times the sum of the number and eight.
Let the number be x.
Five times the sum of a number and eleven means 5 multiplied to the sum of x and 11. In expression this will be written as:
5(x + 11)
Three times the sum of the number and eight means 3 multiplied to the sum of x and 8. In expression this will be written as:
3(x + 8)
So, the overall <u>algebraic</u> expression will be:
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Fractional index means "xth root of". Negative index means a fraction. So together, what it really means is: