16x-30-14x-6 , i know its 12 but i dont know HOW its 12.

Step-by-step explanation:

so what you're going to want to do is set this equal to 0. add the 6 over. add the 30 over. subtract 16x-14x they have the same degree of power so you can do that. divide the coefficient of x over and x=12 maybe who really knows anymore

it is true

step-by-step explanation:

all the combinations add up i used   calculator

it will cost dollar $540

the living room is 3 which means if we divide 325/3 then we get $108

therefore if 1part of the living room cost $108 and 3 costed $325

then total 5part of the room will cost 5*108 which gives $540