Hey there, Lets solve this one by one 
Firstly, a<span>dd </span>11<span> to both sides 
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Now, </span><span>Simplify </span><span>5+11</span><span> to </span><span>16 
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Finally, d</span><span>ivide both sides by variable </span><span>y 
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Answer:
y=20
Step-by-step explanation:
 
        
                    
             
        
        
        
All you have to do here is to find the unit rate for 
"<span>an area of 1260 square sentimeters in 1/6 of an hour:"
1260 sq. cm.
------------------- =  (1260)(6) sq cm per hour   =  7560 sq cm per hour (answer)
    (1/6) hr</span>