Question 160639
(21-X)/29=3/5
5(21-X)=3*29
105-5X=87
-5X=87-105
-5X=-18
X=-18/-5
X=3.6 ANSWER.
PROOF:
(21-3.6)/29=3/5
17.4/29=3/5
17.4*5=29*3
87=87