Final answer:
To find the value of 'a' in the equation a + (−1.2) = −5.5, you add 1.2 to both sides to cancel out the -1.2, resulting in a = -4.3.
Step-by-step explanation:
The question asks for the correct value of a in the equation a + (−1.2) = −5.5. To solve for a, we need to isolate the variable on one side of the equation. To do this, we add 1.2 to both sides of the equation.
So, the equation becomes:
a + (−1.2) + 1.2 = −5.5 + 1.2
The −1.2 and +1.2 on the left side cancel each other out, so the equation simplifies to:
a = −5.5 + 1.2
Calculating the right side gives us:
a = −4.3
Therefore, the correct answer to the equation is a = −4.3.