Answers edited by Momo

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• How do you simplify #3/4+(1/4-1/6)#?
  
• How do you solve #30^ { 2} + x ^ { 2} = 36^ { 2}#?
  
• How do you solve #10( x - 2) = - 20#?
  
• What is the equation for the line that goes through #(2,14)# and parallel to #y=-1/2x+2#?