Question

2(3b+6) =78 : Answer is 11

-2(6c-3) = -72 : Answer is 6.5

Check left Side of both equations

Answer 1

2(3b+6) =78 : b=11

-2(6c-3) = -72 : c=6.5

Explanation:

They are correct

Answer 2

The left side of the first equation is 2(3b+6) and the left side of the second equation is -2(6c-3). Both sides of the equations are products of a constant and a variable or a sum/difference of variables.