Answer:
[tex]y = \frac{1}{5}x + 5[/tex]
Step-by-step explanation:
20y - 4x = 100
20y= 4x + 100
Divide everything by 20
20y/20 = y
4x/20 = 1/5x
100/20 = 5
y = 1/5x + 5 (that's the answer)
[tex]20y - 4x = 100\\20y = 4x + 100\\\frac{20y}{20} = \frac{4x}{20} +\frac{100}{20} \\y= \frac{1}{5}x +5[/tex]