Rozwiąż układ równań:
a)
2(x-3y)=5
b)
2y-3(x+2)+5
a) /*6
b) /*6
9x-3-8y+14=12
2x-6y=5
9x-8y=12-11
9x-8y=1/*-3
2x-6y=5/*4
-27x+24y=-3
8x-24y=20
----------------
-19x=17/-19
x=-17/19
2*(-17/19)-6y=5
-34/19-6y=5
-6y=5+34/19
-6y=126/19
y=126/19*(-1/6)
y=-21/19
2x+8-y+3=12
2y-3x-6=12
2x-y=12-11
-3x+2y=12+6
2x-y=1/*2
-3x+2y=18
4x-2y=2
-------------
x=20
2*20-y=1
-y=1-40
-y=-39/*-1
y=39
9x-3-8y+14=12 /*3
2x-6y=5 /*(-4)
27x-24y=3
-8x+24y=-20
19x=-17
-55/19-6y=5
-6y=150/19
y=-25/19
2y-3x-6=5
2x-y=1 /*2
-3x+2y=11
x=22
-3*22+2y=11
2y=77
y=38,5
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Rozwiąż układ równań:
a) /*6
2(x-3y)=5
b) /*6
2y-3(x+2)+5
a)
9x-3-8y+14=12
2x-6y=5
9x-8y=12-11
2x-6y=5
9x-8y=1/*-3
2x-6y=5/*4
-27x+24y=-3
8x-24y=20
----------------
-19x=17/-19
x=-17/19
2*(-17/19)-6y=5
-34/19-6y=5
-6y=5+34/19
-6y=126/19
y=126/19*(-1/6)
y=-21/19
x=-17/19
y=-21/19
b)
b) /*6
2y-3(x+2)+5
2x+8-y+3=12
2y-3x-6=12
2x-y=12-11
-3x+2y=12+6
2x-y=1/*2
-3x+2y=18
4x-2y=2
-3x+2y=18
-------------
x=20
2*20-y=1
-y=1-40
-y=-39/*-1
y=39
x=20
y=39
a) /*6
2(x-3y)=5
9x-3-8y+14=12 /*3
2x-6y=5 /*(-4)
27x-24y=3
-8x+24y=-20
----------------
19x=-17
x=-17/19
2*(-17/19)-6y=5
-55/19-6y=5
-6y=150/19
y=-25/19
x=-17/19
y=-25/19
b) /*6
2y-3(x+2)+5
2x+8-y+3=12
2y-3x-6=5
2x-y=1 /*2
-3x+2y=11
4x-2y=2
-3x+2y=11
-------------
x=22
-3*22+2y=11
2y=77
y=38,5
x=22
y=38,5