If 9x-3y=12 and 3x-5y=7 then 6x+2y = ?

• 6x+2y=5
  
  Given, 9x-3y=12 —(i) & 3x-5y=7 —(ii)
  Subtracting (ii) from (i), we get 6x+2y=5
• 6 years agoHelpfull: Yes(5) No(1)
• 9x-3y=12
  3x-5y=7 On Subracting the values
  6x+2y = 5
• 6 years agoHelpfull: Yes(4) No(1)
• by solving two eqns we get y=5/12,x=53/36
  6x+2y=29/3
• 6 years agoHelpfull: Yes(1) No(2)
• 3x-5y=7
  3x=7+5y
  9x-3y=12
  3(3x)-3y=12
  3(7+5y)-3y=12
  21+15y-3y=12
  12y=-9
  Y=-3/4
  3x-5(-3/4)=7
  3x+15/4=7
  12x=13
  X=13/12
  6x+2y=6(13/12)+2(-3/4)=(13-3)/2=
  10/2=5
• 6 years agoHelpfull: Yes(1) No(1)
• Solving both the equations we get values of x and y as 13/12 and -3/4 respectively. Substituting these values in the equation we get answer as 5.
• 6 years agoHelpfull: Yes(0) No(0)
• 9x-3y=12&3x-5y=7 on sloving equation get x=(13/12)&y=(-3/4) on substitude these values in 6x+2y=5
• 6 years agoHelpfull: Yes(0) No(0)
• (9x-3y) - (3x-5y) = 12-7
  => 6x + 2y = 5
• 6 years agoHelpfull: Yes(0) No(0)
• 9x-3y=12
  9x-15y=27
  y=5/4
  x=53/12
  6(53/12)+2(5/4)=29
• 6 years agoHelpfull: Yes(0) No(0)
• By Subtracting equation 1 and 2
  9x-3y=12
  - 3x-5y=7
  _____________
  6x+2y=5
• 6 years agoHelpfull: Yes(0) No(0)
• 9x -3y =12
  3x-5y=7
  6x+2y=5
• 6 years agoHelpfull: Yes(0) No(0)
• 20
  by solving 1&2 we get x=43/12
  y=-3/4
  then 6x+2y=20
• 6 years agoHelpfull: Yes(0) No(0)
• 9x-3y=12
  3x-5y=7
  
  6x-2y=5
• 6 years agoHelpfull: Yes(0) No(0)
• answer is 5 because
  9x-3y=12 eq.(1)
  and 3x-5y=7 eq(2)
  and subtract eq.(2) from eq.(1) with changing sign of eq.(2) then you get answer.
• 6 years agoHelpfull: Yes(0) No(0)
• +9x-3y=12----(i)
  +3x-5y=07------(ii) x 3
  - + -
  ____________
  y=-3/4
  x=13/12
  
  So, 6x+2y=[6*(13/12)+2*(-3/4)]=5
• 5 years agoHelpfull: Yes(0) No(0)
• y=-3/4, x=13/12
• 5 years agoHelpfull: Yes(0) No(0)
• 9x-3y=12
  3x-5y=7
  _ + _
  __________
  6x+2y=5
  
  answer:5
• 4 years agoHelpfull: Yes(0) No(0)
• 6x+2y=9/2
• 4 years agoHelpfull: Yes(0) No(0)
• x=13/12,y=-3/4 6(13/12)+2(-3/4)=5
• 4 years agoHelpfull: Yes(0) No(0)
• the ans is 7.96
• 4 years agoHelpfull: Yes(0) No(0)
• 5
  A-B IS THE SOLUTION
• 2 years agoHelpfull: Yes(0) No(0)
• A-B=6x+2y=5
• 2 years agoHelpfull: Yes(0) No(0)
• 9x-3y=12 and 3x-5y=7 or 9x-15y = 21
  
  so 12 y =-9
  y=-9/12= -3/4
  9x= 3y+12= 12-9/4 = 39/4
  x= 39/36=13/12
  
  6x-2y = 6*13/12 - 2*(-3/4) =13/2 +3/2 =16/2 =8..option D
• 1 year agoHelpfull: Yes(0) No(0)