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5 votes
-4s+2t=-5
8s-6t=7
What is the value of s?

1 Answer

5 votes

Answer:


-4s+2t=-5...........(1)\\8s-6t=7......(2)\\\\\text{Multiplying equation(1) by 3,}\\-12s+6t=-15.......(3)


\text{Adding equations (2) and (3),}\\\text{\ \ \ \ \ \ }8s-6t=7\\+-12s+6t=-15\\\text{or,\ }-4s=-8\\\text{or,\ }s=2


\text{So the value of }s\text{\ is 2.}

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