Answer:
[tex]\large\boxed{m=\dfrac{3}{4}=0.75}[/tex]
Step-by-step explanation:
[tex]12.6+4m=9.6+8m\qquad\text{subtract 12.6 from both sides}\\\\12.6-12.6+4m=9.6-12.6+8m\\\\4m=-3+8m\qquad\text{subtract}\ 8m\ \text{from both sides}\\\\4m-8m=-3+8m-8m\\\\-4m=-3\qquad\text{divide both sides by (-4)}\\\\\dfrac{-4m}{-4}=\dfrac{-3}{-4}\\\\m=\dfrac{3}{4}=0.75[/tex]
