-9 + 8.3 (adding rational numbers) ! show how u get the answer !

-0.7

Step-by-step explanation:

● -9 + 8.3

Notice that 8.3 = 8 + 0.3

● -9 + (8 + 0.3)

● -9 + 8 + 0.3

-9 + 8 is -1

● (-9 + 8) + 0.3

● -1 + 0.3

-1 is (-0.3 -0.7)

● -0.3 - 0.7 +0.3

● -0.7

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

well what did you do it matters what you did : )

step-by-step explanation: