The mistake is in step 3:
I: −2m =−12 − 2n
II: 2m = 8 + 8n
the student set both right sides of the equations equal (−12 − 2n = 8 + 8n), but the left sides aren't equal: first equation has -2m, second has +2m so the signs of one of the equations must be inverted first
Answer:
x=1
You solve for x by cross multyplying
<h2>1) Plants</h2><h2>2) Animals</h2><h2>3) Humans</h2>
Answer:
10980 is the correct answer
