SOLUTION: How Do you solve this Three-variable equation by substitution?
{13=3x-y
{4y-3x+2z=-3
{z=2x-4y
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Question 362519: How Do you solve this Three-variable equation by substitution?
{13=3x-y
{4y-3x+2z=-3
{z=2x-4y
Answer by HasanSahin(52) (Show Source): You can put this solution on YOUR website!
Put everything in order such that;
Multiply the third equation by 2 and you'll get;
Sum up 2nd and 3rd equations and you'll get;
Multiply the first equation by -4 and you'll get;
Sum up these equations and you'll get;
Then you get; for example put "x" into "-3 = x -4y" equation,you'll get;
;for example if you put "y and x" into "0= 2x -4y -z" equation,you'll get;
RF.
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