Answer:
-53.8 is your answer for a.
Step-by-step explanation:
Isolate the variable (a). Note the equal sign, what you do to one side, you do to the other. Note that one negative sign & one positive sign = one negative sign.
a + (-1.2) = -55
a - 1.2 = -55
Isolate the variable (a). Add 1.2 to both sides
a - 1.2 (+1.2) = -55 (+1.2)
a = -55 + 1.2
Simplify. Combine the terms.
a = -53.8
-53.8 is your answer for a.
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