Solve for m
m=210
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0.45m-2=0.25m+40
Subtract 30 from 28 to get -2.
0.45m-2-0.25m=40
Subtract 0.25m from both sides.
0.2m-2=40
Combine 0.45m and -0.25m to get 0.2m.
0.2m=40+2
Add 2 to both sides.
0.2m=42
Add 40 and 2 to get 42.
m=\frac{42}{0.2}
Divide both sides by 0.2.
m=\frac{420}{2}
Expand \frac{42}{0.2} by multiplying both numerator and the denominator by 10.
m=210
Divide 420 by 2 to get 210.
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