A/4 + 2 = 6 & ' -4 = r/20 - 5 can u me on these two

A/4 + 2 = 6subtract 2 from both sides
A/4 = 6 - 2
A/4 = 4...multiply both sides by 4, eliminating the 4 on the left side
A = 4 * 4
A = 16

-4 = r/20multiply both sides by 20, eliminating the 20 on the right side
-4 * 20 = r
-80 = r

3units/ 5 feet = 60 units/ 100 feet3 units/ 5 feet = 18 units/ 30 feetthe dimensions of the scale drawing are 60 units by 18 units.hope this !

1+1=22×1=22-1=11-1=1duh