SOLUTION: -6-4y=-24 2x+7y=13

Question 227714: -6-4y=-24
2x+7y=13
Answer by drj(1380) (Show Source): You can put this solution on YOUR website!
-6-4y=-24 Equation A (see Step 8 if you meant -6x-4y=-24)
2x+7y=13 Equation B

Step 1. Solve for y in Equation A .

Step 2. Add 6 to both sides of the equation

Step 3. Divide by -4 to both sides of the equation

Step 4. Now substitute into .

Step 5. Subtract from both sides of the equation

Step 6. Divide by 2 to both sides of the equation

Step 7. ANSWER: and

Step 8. Now, I'll assume you meant to solve the following linear system of equations

-6x-4y=-24 Equation A
2x+7y=13 Equation B

Solved by pluggable solver: SOLVE linear system by SUBSTITUTION

Solve:
We'll use substitution. After moving -4*y to the right, we get:
, or . Substitute that
into another equation:
and simplify: So, we know that y=0.882352941176471. Since , x=3.41176470588235.

Answer: .

I hope the above steps were helpful.

For FREE Step-By-Step videos in Introduction to Algebra, please visit http://www.FreedomUniversity.TV/courses/IntroAlgebra and for Trigonometry visit http://www.FreedomUniversity.TV/courses/Trigonometry.

And good luck in your studies!

Respectfully,
Dr J
http://www.FreedomUniversity.TV

I hope the above steps were helpful.

For FREE Step-By-Step videos in Introduction to Algebra, please visit http://www.FreedomUniversity.TV/courses/IntroAlgebra and for Trigonometry visit http://www.FreedomUniversity.TV/courses/Trigonometry.

And good luck in your studies!

Respectfully,
Dr J
http://www.FreedomUniversity.TV
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