Answer:
1
Step-by-step explanation:
19-4(1)=15
19-4=15
15=15
c=1/2
19-4c=17
Subtract 19 from each side
19-19-4c=17-19
-4c = -2
Divide each side by -4
-4c/-4 = -2/-4
c = 1/2
