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tekilochka [14]
3 years ago
12

Find the solution x-2y=-26 x-y=-2

Mathematics
1 answer:
zalisa [80]3 years ago
3 0

Answer:

<h2>x = 22 and y = 24</h2>

Step-by-step explanation:

\left\{\begin{array}{ccc}x-2y=-26\\x-y=-2&\text{change the signs}\end{array}\right\\\\\underline{+\left\{\begin{array}{ccc}x-2y=-26\\-x+y=2\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad\qquad-y=-24\qquad\text{change the signs}\\.\qquad\qquad y=24\\\\\text{Put the value of y to the second equation:}\\\\x-24=-2\qquad\text{add 24 to both sides}\\x=22

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