Answers edited by Prashant S.

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• How do you multiply and simplify #\frac { 11} { 8} \cdot \frac { 19} { 11}#?
  
• How do you solve #4( 3x - 2) = 28#?
  
• How do you solve #4x + 9 = 7x#?
  
• How do you solve #a/15=4/5#?
  
• How do you simplify #48 - 2/3 #?
  
• What is 150% of $10?
  
• What is 81% as a fraction?
  
• What are the laws of refraction?