Final Answer:
b + 15.3 = 2.8
Step-by-step explanation:
Given b = -12.5, the task is to evaluate the expression b + 15.3. Substituting the value of b into the expression gives us (-12.5) + 15.3.
By performing the addition, we obtain the result as 2.8. The sum of -12.5 and 15.3 equals 2.8.
To find the value of b + 15.3, you first substitute the given value of b, which is -12.5, into the expression. Then perform the addition operation between -12.5 and 15.3. By adding these values together, the result is 2.8. Hence, when you add 15.3 to the given value of b, which is -12.5, the final answer is 2.8.