Question

(980 of 12%)-(450 of ?%)=227of30%

Answer 1

11 is the answer
(12/100*980)-x/100*450=30/100*227
392-227=15x
x=165/15
x=11

Answer 2

Hey there!!

= (980*12/100) - (450*x/100) = (227*30/100)
= -(450*x/100) = ( 227*3/10) - (98*12/10)
= -(450*x/100) = 681/10 - 1176/10
= -(450*x/100) = - (495/10)
= 450*x/100 = 495/10
= x = (495*100) / (10*450)
= x = 495/45
= x = 11

hope it helps...