12(5-m) = 7 -(1+3m) distribute
60-12m = 7 -1-3m combine like terms
60 - 12m = 6 -3m add 12m to both sides
60 = 6 + 9m subtract 6 from both side
54 = 9m divide by 9
6 = m
Answer:
all I know that an octagon has 8 sides and a triangle has 3 sides and a square has 3 sides and a hexagon has six sides and a Pentagon has 5 sides
2n(n + 3) - 5(n + 3) = (2n-5)(n+3)
A. (n + 3) (2n - 5)
Answer:
the answer is 1200
Step-by-step explanation:
