Question 466292
(5)/(2)*x+3=(21)/(2)

(5x)/(2)+3=(21)/(2)

(5x)/(2)=-3+(21)/(2)

(5x)/(2)=(15)/(2)

(5x)/(2)*2=(15)/(2)*2

5x=(15)/(2)*2

5x=15

(5x)/(5)=(15)/(5)

x=(15)/(5)

x=3