85*.85 + X*.15 = 83; 86.3 * .91 + X * .09 = 83.... what is X?

Question

85*.85 + X*.15 = 83

and also,

86.3 * .91 + X * .09 = 83

Answer 1

it is very easy u can do it in your own mind dude

Answer 2

X*0.15= 83 -72.25

X*0.15 = 10.75

X = 10.75 / 0.15

X = 71.666

X * 0.09 = 83 - (86.3 * 0.91)

X *0.09 = 83 - 78.533

X * 0.09 = 4.467

X = 4.467 / 0.09

X = 49.633333