I hope this helps ( there is no negatives )
What are you looking for?
Answer:

Step-by-step explanation:
<u>Step 1: Convert to Scientific Notation</u>
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is in standard notation
is in scientific notation
Answer: 
3x28=84
Step-by-step explanation:
2x-y=-5
-x-y=10
3x=-15
x=-5
-10-y=-5
-y=-5+10
-y=5
y=-5
HOPE I HELPED!!!