December 2018 1 16 Report
Rozwiązywanie układów równań pierwszego stopnia z dwiema niewiadomymi:
a.  \left \{ {{2x+y=39} \atop {x+2y=33}} \right.
b. \left \{ {{x+y=7} \atop {x-y=1}} \right.
c. \left \{ {{2x-y=4} \atop {x+y=11}} \right.
d. \left \{ {{x-2y=-3} \atop {2x+3y=8}} \right.
PROSZĘ POMOCY!!! daję naj.
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