II gimnazjum

Matematyka z plusem 2

a) +{2x+5y=73x−5y=3​​ &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; 2x+3x=7+3 &nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 5x=10 &nbsp;  ∣:5 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; x=2 &nbsp; {x=22⋅2+5y=7    ∣−4​ &nbsp; {x=25y=3   ∣:5​

a) x+2y=−13  ∣⋅(−1) &nbsp; −x−2y=13 &nbsp; b) 3x+y=−5  ∣⋅(−2)

a) x+2y=−13  ∣⋅2 &nbsp;&nbsp; 2x+4y=−26 &nbsp;&nbsp; b) 3x+y=−5  ∣⋅32​

a) {3x+2y=132x+y=11  ∣⋅(−2)​ &nbsp;&nbsp; &nbsp; &nbsp; +{3x+2y=13−4x−2y=−22​​ &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; −x=−9 &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; x=9 &nbsp; {x=93⋅9+2y=13   ∣−27​ &nbsp; {x=92y=−14​ &nbsp; {x=9y=−7​ &nbsp;

a) {2x−3y=7  ∣⋅53x−5y=11     ∣⋅(−3)​ &nbsp; &nbsp;&nbsp; +{10x−15y=35−9x+15y=−33​​ &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; x=2 &nbsp; {x=22⋅2−3y=7​ &nbsp; {x=23y=−3​ &nbsp;&nbsp; {x=2y=−1​ b) {5p−2r=21   ∣⋅53p+5r=−6  ∣⋅2​ &nbsp; &nbsp; &nbsp;&nbsp; &nbsp;&nbsp; +{25p−10r=1056p+10r=−12​​ &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; 31p=93

Komentarze