Hi there! The answer is c = - 13.78
To find our answer we need to work out the parenthesis. This is for instance possible using rainbow technique.
[tex]5.3(4x - 2.6) = \\ 5.3 \times 4x - 5.3 \times 2.6 = \\ 21.2x - 13.78[/tex]
Therefore the value of c = - 13.78.
~ Hope this helps you!
