SOLUTION: Use the echelon method to solve the given system of two equations in two unknowns. 14x - 3y = 2 2x + 18y = 74 This may be more of a calculus question but any help would be gr

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Question 1078139: Use the echelon method to solve the given system of two equations in two unknowns.
14x - 3y = 2
2x + 18y = 74
This may be more of a calculus question but any help would be greatly appreciated. Thanks.
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
%28matrix%282%2C3%2C%0D%0A14%2C-3%2C2%2C%0D%0A2%2C18%2C74%29%29
Replace R2 with R1-7*R2,
%28matrix%282%2C3%2C%0D%0A14%2C-3%2C2%2C%0D%0A0%2C-129%2C-516%29%29
So then,
-129y=-516
Solve for y. Then use the either equation to solve for x.