Answers edited by Tsepi

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• How do you solve the system of equations #x+ 2y = 3# and #- 2x + y = 1#?
  
• How do you solve #\frac{3}{10}=\frac{9}{y}#?
  
• How do you solve #10+ x = - 6x + 31#?
  
• Question #e8a45
  
• How do you divide #7\frac { 1} { 3} \div 2\frac { 2} { 6}#?
  
• How do you solve #-2x - 5= - 17+ 4x#?
  
• How do you solve #-20= - 4z#?
  
• How do you simplify #\frac { ( x y ) ^ { 2} } { x ^ { 2} y ^ { 2} }#?
  
• What is the equation of the line that goes through #(2, 0)# and is parallel to #y=2/3x#?