Answer:
The line '10x-8=10' should be '10x-8=4x+10'
He took 2x away on the right side , as opposed to adding it.
Answer:
230-300= -70
All you have to do is subtract :)
<span>Cows (C)→ 4 legs
Chickens (c) → 2 legs
C+c=13 |×4
4C+2c=36
4C+4c=52
4C+2c=36
--------------- (-)
2c=16
c=8 chickens
C=13-8
C=5 cows
</span>
Jamie completed 7/16 more than Halverson because 10/16-3/16 is 7/16