m = 3.07
The given equation is:
0.02m + 0.08(8-m) = 1.78
Expand the equation using the distribution rule:
0.02m + 0.64m - 0.08m = 1.78
Simplify the Left Hand Side
0.58m = 1.78
Divide both sides by 0.58
0.58m / 0.58 = 1.78 / 0.58
m = 3.07
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