From this equation, we need to find the value of m
We first isolate the variable m with its coefficient from the other values, so:
m2.8 - 4.9 = -7.11
m2.8 = -7.11 + 4.9
A negative and a positive will make a negative,so:
m2.8 = -2.21
Next we isolate the variable m completely from the other value so we divide both sides by 2.8, so
m2.8 / 2.8 = -2.21 /2.28
m = -0.78
Therefore the value of m is -0.78