Answer:
27
Question:
Find [tex]x[/tex] so that [tex](x,-14)[/tex] is a solution to [tex]2x+3y=12[/tex] .
Step-by-step explanation:
So we are asked to replace [tex]y[/tex] with -14 and solve for [tex]x[/tex] in the equation:
[tex]2x+3y=12[/tex].
[tex]2x+3y=12[/tex] with [tex]y=-14[/tex]:
[tex]2x+3(-14)=12[/tex]
[tex]2x-42=12[/tex]
Add 42 on both sides:
[tex]2x=54[/tex]
Divide both sides by 2:
[tex]x=27[/tex].
So the [tex]x[/tex]-coordinate that corresponding to [tex]y=-14[/tex] is [tex]27[/tex].
Verify that:
[tex](27,-14)[/tex] is a point satisfying [tex]2x+3y=12[/tex].
Replace [tex]x[/tex] with 27 and [tex]y[/tex] with -14:
[tex]2(27)+3(-14)=12[/tex]
[tex]54+-42=12[/tex]
[tex]12=12[/tex] is true so our work must be right.