Which equation is the correct translation of the following statement?

Four less than a number is nine.

4 - x = 9
9 - 4 = x
9 - x = 4
x - 4 = 9

x - 4 = 9  (x will equal 13)

What I did was since 4 is less than 13 we could use 13-4 since 4 is less than 13.

13-4 will get u 9 so that x will equal 13

13-4=9

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