Answer:
81°
Step-by-step explanation:
Please refer to the attachment(s) for explanations
The equation (1) is divided by 2 to create new equivalent system of equations.
Step-by-step explanation:
The given systems of equations are:

Considering 8y instead of 8 in eq(1)
We need to identify what action was completed to create this new equivalent system of equations? 
Comparing given equations we came to know that equation(1) is divided by 2 to get the new equation i.e

While second equation is same as given.
So, The equation (1) is divided by 2 to create new equivalent system of equations.
Keywords:System of Equation
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The Tama monorail runs for 18 hours every day.
Answer:
it is
Step-by-step explanation:
because it addition it doesn't matter which way you put it