To eliminate the y-terms and solve for x in the fewest steps,

Algebra
Tutor: None Selected Time limit: 1 Day

Jun 27th, 2015

Thank you for the opportunity to help you with your question!

since 9*(5x-4y) = 9*28 

45x-36y = 252

-4*(3x-9y)=-120 

-12x+36y =120

add the two we have 33x = 372 

x = 372/33 

the last answer is correct 

Please let me know if you need any clarification. I'm always happy to answer your questions.
Jun 27th, 2015

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Jun 27th, 2015
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Jun 27th, 2015
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