Answer:
x = 12/17
Step-by-step explanation:
2x + 4x + 5x + 6x = 12
17x = 12
90n^2
An Expression is a group of numbers, variables, and operators. An equation is described as a mathematical statement.
Hope this helps
(1+12h)/4h
is 
, so any range such that 
will give two complete periods.
