I keep forgetting what to do
in Trigonometry Answers by

Your answer

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
To avoid this verification in future, please log in or register.

1 Answer

Best to get your unknowns on to one side of the equation:
3x-5y=2; 5x-3y=14. To eliminate x or y we need first to multiply each equation by 3 or 5 so that we end up with a matching x or y coefficient in each equation.
That is, 15x or 15y. Let's multiply by 3 and 5:
9x-15y=6; 25x-15y=70.
The y terms have the same coefficient, so let's subtract the first equation from the second.
16x=64, so x=4 and 20-3y=14, by substituting x. So 3y=6 and y=2.
Check out these values by putting them into the original equations.
by Top Rated User (1.0m points)

Related questions

1 answer
asked May 25, 2014 in Algebra 1 Answers by Victoria | 881 views
1 answer
1 answer
asked Apr 24, 2013 in Algebra 2 Answers by anonymous | 612 views
1 answer
1 answer
1 answer
1 answer
1 answer
Welcome to MathHomeworkAnswers.org, where students, teachers and math enthusiasts can ask and answer any math question. Get help and answers to any math problem including algebra, trigonometry, geometry, calculus, trigonometry, fractions, solving expression, simplifying expressions and more. Get answers to math questions. Help is always 100% free!
87,021 questions
96,296 answers
2,362 comments
24,339 users