Answer: The number is: " 55 ".
Explanation:
Note that we are asked to find a particular number; which we shall use the variable: x ;
If 15 is added to (unknown number), the result is:
40 less than twice (two times) the (unknown number).
Find (the number).
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So, if 15 is added to x ;
(i.e. x + 15 ; the result is (i.e. equals) ;
→ 40 less than 2*x ;
or: → 2x − 40 .
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So write the equation; and solve for x ; which is the answer:
→ x + 15 = 2x − 40 ;
↔ 2x − 40 = x + 15 ;
Subtract x from Each Side of the equation; & add 40 to Each Side of the equation:
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2x − 40 = x + 15 ;
- x + 40 = - x + 40 ;
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x = 15 + 40 ;
= 55 ;
→ x = 55 ; which is the answer.
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Hope this is helpful!
Best of luck to you!
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