1.Rozwiąż równanie. a) 8(x-1)+2=2(x+4)+16
b) -x=2(x-1)+3(x-2)+4(x-3)2. ZADANIE W ZAŁĄCZNIKU :D
8x-8+2=2x+8+16
8x-6=2x+24
8x-2x=24+6
10x=30/10
x=3
b. -x=2x-2+3x-6+4x-12
-x-2x-3x-4x=-20
-10x=-20|*(-1)
10x=20/:10
x=2
2.
x-2y=6 *(-2)
2x+3y=-2
-2x+4y=-12
7y=-14/7
y=-2
x-2*-2=6
x+4=6
b. 1/3x +y=-1 /*3
x - 1/2y=11 /*2
x+3y=-3 *-2
2x-y=22
-2x-6y=6
7y=28
y=4
i podkładamy xd
x+3*4=-3
x+12=-3
x=-9
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8x-8+2=2x+8+16
8x-6=2x+24
8x-2x=24+6
10x=30/10
x=3
b. -x=2x-2+3x-6+4x-12
-x-2x-3x-4x=-20
-10x=-20|*(-1)
10x=20/:10
x=2
2.
x-2y=6 *(-2)
2x+3y=-2
-2x+4y=-12
2x+3y=-2
7y=-14/7
y=-2
x-2*-2=6
x+4=6
x=2
y=-2
b. 1/3x +y=-1 /*3
x - 1/2y=11 /*2
x+3y=-3 *-2
2x-y=22
-2x-6y=6
2x-y=22
7y=28
y=4
i podkładamy xd
x+3*4=-3
x+12=-3
x=-9
y=4