Answered

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What is the solution to the system of equations?


x=4y+6
x-3y=4

Sagot :

luana
[tex] \left \{ {{x=4y+6} \atop {x-3y=4}} \right. \\\\ 4y+6-3y=4\\\\ y+6=4\ \ \ \ | subtract\ 6\\\\ y=-2\\\\ x=4y+6=4*(-2)+6=-8+6=-2[/tex]
You could use the substitution method (put x=4y+6 into x-3y=4):
4y+6-3y=4
Now you can combine alike terms
4y-3y=y
Put y into the first equation
Y+6=4
Now solve
Y+6=4
-6 -6
Y= -2

Now substitute y into the equation x=4y+6
X=4(-2)+6
Multiply 4x-2
X=-8+6
X= -2
The solution = (-2,-2)
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