Solve for w:
-4 (8 w+24) = -64
Divide both sides of -4 (8 w+24) = -64 by -4:
(-4 (8 w+24))/(-4) = (-64)/(-4)
(-4)/(-4) = 1:
8 w+24 = (-64)/(-4)
The gcd of -64 and -4 is -4, so (-64)/(-4) = (-4×16)/(-4×1) = (-4)/(-4)×16 = 16:
Answer: | 8 w+24 = 16, w=-1
