Hey!
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Steps to Solve:
8 + (-3m) = 26
~Subtract 8 to both sides
8 + (-3m) - 8 = 26 - 8
~Simplify
-3m = 18
~Divide -3 to both sides
-3m/-3 = 18/-3
~Simplify
![\large\boxed{m~=~-6}](https://img.qammunity.org/2020/formulas/mathematics/middle-school/3uz7qavtdrn6t16pjj2avdl33zklaobrp2.png)
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Hope This Helped! Good Luck!