Answer:
m+k=hw
m=hw-m
always conside BODMAS rule and subject
What is the question? You only gave shapes with dimensions.
Do you want us to find volume? Or surface area??
Come on please, dont leave us hangin.
Com.ment me what your question is
-x / 3 = 6
Multiply each side by 3 : -x = 18
Multiply each side by -1 : <em> x = -18</em>