y = (400/20) + 25y = 20 + 25y = 45
10b + 18 = 1710b = 17 - 1810b = -1b = -1/10
1.32x - 0.47 = 12.81.32x = 12.8 + 0.471.32x = 13.27x = 13.27 / 1.32x = 10
y = (400/20) + 25
y = 20 + 25
y = 45
10b + 18 = 17
10b = 17 - 18
10b = -1
b = -1/10
1.32x - 0.47 = 12.8
1.32x = 12.8 + 0.47
1.32x = 13.27
x = 13.27 / 1.32
x = 10