Algebra 1

$m=-5$
We start with the given equation: $8+3m=-7$ We start by subtracting $8$ from each side of the equation: $8-8+3m=-7-8$ Next, we combine like terms: $3m=-15$ Finally, we divide by $3$ on each side of the equation: $m=\frac{-15}{3}=-5$
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