Question

( a x 25 - 9600 :32 ) + (7000-250x20):50=840

Answer 1

(a x 25 - 300) + (7000-5000):50=840
(a x 25 - 300)+ 2000:50=840
(a x 25-300) + 40=840
a x 25 + 300= 840-40
a x 25 + 300 = 800
a x 25 = 800-300
a x 25 = 500
a = 500:25
a = 20