Please help as soon as possible

Answer:
c= 12.19
Step-by-step explanation:
Let's solve for c.
5.3(4x−2.3)=21.2x+c
Step 1: Flip the equation.
c+21.2x=21.2x−12.19
Step 2: Add -21.2x to both sides.
c+21.2x+−21.2x=21.2x−12.19+−21.2x
c=−12.19
Answer:
c=−12.19