Answers edited by Manasvini Nittala

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• How do you solve #tana+1=0# and find all solutions in the interval #[0,2pi)#?
  
• How do you solve #y=x-4# and #y=2x# using substitution?
  
• How do you solve #\log _ { 3} ( \frac { 1} { 9} ) = x#?
  
• How do you solve the system #y=1/3x+2, y=-x-2# by graphing?
  
• How do you express #26/8# as a decimal number?