Question 212892
Solve the system using the substitution method


{{{5x-4y=-5}}}
{{{7x+y=21}}}


Solution (?/33,140/?)  ANSWER (79/33, 140/33)


The following steps solves the set of equations by substitution.


*[invoke linear_substitution "x", "y", 5, -4, -5, 7, 1, 21 ]


Based on the above steps we have the following:   x=2.3939... = 79/33 and y=4.2424...=140/33


where x = ?/33 = 2.3939... and y = 140/? = 4.2424...


I hope the above steps were helpful.


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Respectfully,
Dr J