Answer:

Step-by-step explanation:
Take 3s, the greatest common factor, out of both terms in the polynomial.
Simplifying
120 + -28a = 78
Solving
120 + -28a = 78
Solving for variable 'a'.
Move all terms containing a to the left, all other terms to the right.
Add '-120' to each side of the equation.
120 + -120 + -28a = 78 + -120
Combine like terms: 120 + -120 = 0
0 + -28a = 78 + -120
-28a = 78 + -120
Combine like terms: 78 + -120 = -42
-28a = -42
Divide each side by '-28'.
a = 1.5
Simplifying
a = 1.5
Oh you got an answer good luck
5'7" is Stephen's height
4.8 billion is the distance to the sun.
4.8 billion ft / 5'7" = 859,701,493 ft