Hi there! I can help you with this! First, let's combine like terms and do everything for the right side of the problem. When you do the distributive property, you get 32x - 40. Combine like terms and you'll get 32x - 60. Now, the inequality is 20x = 32x - 60. First, let's subtract 32x from both sides to get the integer by itself. When you do that, you get -12x = -60. Now, divide each side by -12 to isolate the "x". -60/-12 is 5. Let's plug it in. 20 * 5 is 100. 32 * 5 is 160. 160 - 60 is 100. 100 = 100. There. x = 5.
Answer: 15.7
Step-by-step explanation:

Using
, we get 
If you're adding a cm to all sides, the length becomes 10cm (because you add 1 cm to each side) and the width is 8cm for the same reason. 10+8+10+8 = 36 cm for the perimeter. 10*8=80 cm squared for the area.
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