Answer:
[tex]m=-\frac{42}{31}[/tex]
Step-by-step explanation:
[tex]m+7+\left(-15m\right)+9-17m=58[/tex]
Remove brackets:
[tex]m+7-15m+9-17m=58[/tex]
Group the similar terms together:
[tex]m-15m-17m+7+9=58[/tex]
[tex]-31m+16=58[/tex]
Subtract 16 from both sides:
[tex]-31m+16-16=58-16[/tex]
[tex]-31m=42[/tex]
Divide both sides by -31:
[tex]\frac{-31m}{-31}=\frac{42}{-31}[/tex]
[tex]m=-\frac{42}{31}[/tex]
