[tex]\huge\text{Hey there!}[/tex]
[tex]\large\text{c + 28 = 67}\\\\\large\text{SUBTRACT by 28 to BOTH SIDES}\\\\\large\text{c + 28 - 28 = 67 - 28}\\\\\large\text{Cancel out: 28 - 28 because that gives you 0}\\\\\large\text{Keep: 67 - 28 because it helps you solve for your c-value}\\\\\large\text{67 - 28 = 39}\\\\\boxed{\boxed{\large\text{Answer: \bf c = 39}}}\huge\checkmark[/tex]
[tex]\text{Good luck on your assignment and enjoy your day!}[/tex]
~[tex]\frak{Amphitrite1040:)}[/tex]
