6*5+90*5=x
x=6*5+90*5
X=30+450
X=480
10 * 2 / 5 - (20 / 5) x = 2 / 5 equation
10 * 2 / 5 - (20 / 5) x = 2 / 5
4 - (20 / 5) x = 2 / 5
(20 / 5) x = 4-2 / 5
(20 of 5) x = 20-2 of 5 = 18 of 5
20x=18
10x=9
X = 9 / 10