The answer should be 12x cm power of 2
1) property of distribution: 30 = -30n - 30
2) inverse property of addition: 60 = -30n
3) inverse property of multiplication: -2 = n
step 2: subtract 30 from both sides
step 3: divide -30 from both sides
The perimeter is the sum of all the sides of the figure⇒
<em><u>151</u></em>


<u><em>152</em></u>
<u><em></em></u>
<u><em></em></u>
<u><em></em></u>
<u><em>153</em></u>
You forgot to attach a photo