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how do I solve this linear equations by substitution x=5 x + y = 4

How Do I Solve This Linear Equations By Substitution X5 X Y 4 class=

Answer :

Substitute 5 for x in the equation x+y=4 to obtain the value of y.

[tex]\begin{gathered} 5+y=4 \\ y=4-5 \\ =-1 \end{gathered}[/tex]

So solution of the equations is (5,-1).

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