1) (20 - a) / 0.6 = 9.1820 - a = 9.18 * 0.620 - a = 5.508-a = 5.508 - 20-a = -14.492a = 14.492
2) (0.25 + 3x) * 100 = 29500.25 + 3x = 2950 / 1000.25 + 3x = 29.53x = 29.5 - 0.253x = 29.25x = 29.25 / 3x = 9.75
1) (20 - a) / 0.6 = 9.18
20 - a = 9.18 * 0.6
20 - a = 5.508
-a = 5.508 - 20
-a = -14.492
a = 14.492
2) (0.25 + 3x) * 100 = 2950
0.25 + 3x = 2950 / 100
0.25 + 3x = 29.5
3x = 29.5 - 0.25
3x = 29.25
x = 29.25 / 3
x = 9.75