Consider the system of equations 5x + y = 9 and 4x - y =18 what is the value of the x-coordinate of the solution

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asked Sep 22, 2022 148k views

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Consider the system of equations 5x + y = 9 and 4x - y =18 what is the value of the x-coordinate of the solution

Mathematics
college

Yuchien asked

by Yuchien

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13 votes

Answer:

$\left \{ {{5x+y=9} \atop {4x-y=18}} \right.\\\\=>\left \{ {{5x+4x=9+18} \atop {y=4x-18}} \right.\\\\<=>\left \{ {{9x=27} \atop {y=4x-18}} \right.\\\\<=>\left \{ {{x=3} \atop {y=4x-18}} \right.$

=> the value of the x-coordinate is 3

Explanation:

Roblovelock answered Sep 29, 2022

by Roblovelock

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