Question

2a + 4b + c =5 x =-2 a - 4b = -6 y=1

Answer 1

There is no solution ,a+c=-10;b-c=15;a-2b+c=-5 No solution System of Linear Equations entered : [1] 2a+c=-10 [2] b-c=15 [3] a-2b+c=-5 Equations Simplified or Rearranged :  [1] 2a + c = -10   [2] - c + b = 15   [3] a + c - 2b = -5 Solve by Substitution :

// Solve equation [3] for the variable  c  
 

[3] c = -a + 2b - 5

// Plug this in for variable  c  in equation [1]

  [1] 2a + (-a +2?-5) = -10   [1] a = -5

// Plug this in for variable  c  in equation [2]

  [2] - (-? +2b-5) + b = 15   [2] - b = 10

// Solve equation [2] for the variable  ?  
 

[2] ? = b + 10

// Plug this in for variable  ?  in equation [1]

  [1] (? +10) = -5   [1] 0 = -15 => NO solution No solution