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• What is #(36 + 3 * 21) /(2+11-2)#?
  
• How do you solve #8+ ( 5) ( 7)#?
  
• How do you evaluate #13\frac { 1} { 7} + ( - 6\frac { 2} { 7} )#?
  
• What is #9/15 + 3/45#?
  
• Simplify?
  
• What is #4+2(5)+(-3)#?
  
• What is #-5 1/5 -: 2/3#?
  
• How do you simplify #(x^2+ 3x) - (x^2+ 2x + 3)#?