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x2-5x = 0 x(x-5) = 0 x = 0 or x = 5
5 is less than x can be written as 5 < x and represents the set of all values of x such that 5 is less than x - or equivalently, all values of x that are greater than 5. This would comprise the part of that number line to the right of the number 5. 5 less than x is the expression x-5 and is the one value that is 5 units to the left of x on the number line.
fifty 5 x 10 = 50
No because .5 is greater than .45