What is the value for m for this equation: 3m - 6.8 = 31?
a. 37.8
b. 12.6
c. 8.06
d. 40.8

Ok, so you your first move would be isolating 3m, for that you'll have to take 6.8 away from the left side by subtracting it from itself. so It'll be 3m= 6.8+31. 6.8 turns positive because when a number is moved to another side of the equal side, the sign changes. So after this add 31 and 6.8. You'll get 37.8. So teh equation will be 3m-37.8. To find M divide 3 from both sides. 3m/3 is equal to m. and 37.8/3 is equal to 12.6. Hope that helped :D