Answer:
The question is simply a written version of an equation.
Where it says "a number", let us use the variable x.
5 * x - 40 = 50
5x - 40 = 50
x - 8 = 10
x = 18
I am not sure which of the equations are depicted, but I hope this helps!
Explanation:
hello,
let's say that the number we are looking for is n
the sentence means
5n-40=50
hope this helps
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