SOLUTION: 3y – 7x = –29 7x + 11y = 1 by elimination method

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Question 1043970: 3y – 7x = –29
7x + 11y = 1
by elimination method
Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39617)   (Show Source): You can put this solution on YOUR website!


Rewrite so each equation is in the same format.


Already set for eliminating the x terms to get y. No changes for that.
Add corresponding members of the equations.


Do this to eliminate y:
Answer by MathTherapy(10551)   (Show Source): You can put this solution on YOUR website!

3y – 7x = –29
7x + 11y = 1
by elimination method
3y - 7x = - 29_____- 7x + 3y = - 29 ------- eq (i)

7x + 11y = 1 ------- eq (ii)

14y = - 28 ------- Adding eqs (ii) & (i)



Substitute - 2 for y in either eq (i) or eq (ii) to determine the value of x 

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