Find the solution of this system of equations. Separate the x- and y-values with a comma. x - 2y = 9 and x - y = 11
1 answer:
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Answer:
Step-by-step explanation:
It's like solving any equation, except we have letters instead of numbers .
k = 3tm + rs {subtract rs from both sides}
k - rs = 3tm {divide both sides by (3m)}
{swap sides}
m≠0
{m must be ≠0 because you cannot divide by 0. There is no t for m=0}
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