6m + m - 4(-2m + 1) - m = 7m + 8m - 4 - m = 15m - 4 - m = 14m - 4
put m = -8 to the expresiion:
14(-8) - 4 = -112 - 4 = ** -116**
The value of the expression 6 m + m − 4 ( − 2 m + 1 − m ) when m = − 8 is − 156 . We simplified step-by-step, combining like terms and distributing correctly. Finally, the substitution led to the result of − 156 .
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