Let's represent the number as x.
The sum of the number (x) and 26 is x + 26.
Half of the sum is (1/2)(x + 26).
Setting this equal to 15:
(1/2)(x + 26) = 15
To solve for x, we can start by multiplying both sides of the equation by 2 to get rid of the fraction:
2((1/2)(x + 26)) = 2(15)
Simplifying:
x + 26 = 30
Subtracting 26 from both sides:
x = 4
Therefore, the number is 4.
Half the sum of a number and 26 is 15. What is the number?
-11
4
5.5
-22
1 answer
1 answer