Answer:
Step-by-step explanation:
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I think the first one is 1/200 and the second is 1/125

Add 7 to both sides

At the left hand side 7 will cancel 7
At the right hand side 7 will add up

Divide through by 2

simplify the fraction

Yes it is a 90 degree rotation clockwise.
1.37x10^9 is the correct answer:)