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SIMPLIFY IT
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-.1

Step-by-step explanation:

First we do

19-1.67 since left to right

this is 2.3

then we multiply -2.4 with the + sign to get -2.4

then we add 2.3 to -2.4 to get -.1

do i do it on a graph?

step-by-step explanation:

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