Solve for m
m=-2
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-3m+1=8m-23\left(7+4m\right)
Combine 2m and -5m to get -3m.
-3m+1=8m-161-92m
Use the distributive property to multiply -23 by 7+4m.
-3m+1=-84m-161
Combine 8m and -92m to get -84m.
-3m+1+84m=-161
Add 84m to both sides.
81m+1=-161
Combine -3m and 84m to get 81m.
81m=-161-1
Subtract 1 from both sides.
81m=-162
Subtract 1 from -161 to get -162.
m=\frac{-162}{81}
Divide both sides by 81.
m=-2
Divide -162 by 81 to get -2.
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