Question

12.5 - 4g = -2g - 3.5 how do I work this out to get the answer

Answer 1

$12.5 -4g=-2g-3.5 \\\\ 12.5+3.5=-2g+4g \\\\ 16=2g \\\\ \boxed{g=\frac{16}{2}=8}$

Answer 2

12.5 - 4g = -2g - 3.5
12.5-2g=-3.5 (add 2g to both sides)
-2g=-16 (takeaway -12.5 to both sides)
g=8 (divide by -2 to both sides)