|-12 + -6| = |-18| = absolute value of negative eighteen = . . . 18
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Equation : 
First Add 13 to both sides

The second step is to divide both sides by 8

We have our answer
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Answer:
0.000000001
Step-by-step explanation:
Let's convert this :
0.000000001
tHT M B
t=tenths
H=Hundredths
T=Thousandths
M=millionths
B=Billionths
If the room is (6/34)" by (4/12)" on the drawing, the bedroom is (12/19)' by (4/3)'