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Pls answer and thanks!!

Use addition to solve the linear system of equations.

3x - y = 6

y = x - 4

User Robbert
by
7.3k points

2 Answers

3 votes
y=-3,x=1 because of the work
User Aaron Yordanyan
by
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0 votes

Answer:

Problem:

Solve 3x−y=6;y=x−4

Steps:

I will try to solve your system of equations.

y=x−4;3x−y=6

Step: Solvey=x−4for y:

Step: Substitutex−4foryin3x−y=6:

3x−y=6

3x−(x−4)=6

2x+4=6(Simplify both sides of the equation)

2x+4+−4=6+−4(Add -4 to both sides)

2x=2

2x

2

=

2

2

(Divide both sides by 2)

x=1

Step: Substitute1forxiny=x−4:

y=x−4

y=1−4

y=−3(Simplify both sides of the equation)

Answer:

y=−3 and x=1

Explanation:

Hope this helped you

User Mark Adelsberger
by
7.8k points

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