1.Rozwiąż równania
a)6x-7(11+2x)+2=-4(15-x)+3x=
b)3(5x+3)=7(x+5)-3(2-x)=
c)2(x-1)+4(x-3)=-3(x-2)+9x=
d)5x-3(6-8x)=x-7(x+4)=
e)2x+8(2x-3)-6(x-3)=5(3x+1)+2x-11=
f)6(3,5-1,2x)=5(-3,5x+1,2)+0,3x=
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a) 6x-77-14x+2=-60+4x+3x
-15x=15
x=-1
b) 15x+9=7x+35-6+3x
5x=20
x=4
c) 2x-2+4x-12=-3x+6+9x
0=20
brak rozwiązania
d) 5x-18+24x=x-7x-28
35x=-10
x=-10/35
e) 2x+16x-24-6x+18=15x+5+2x-11
-5x=0
x=0
f) 21-7,2x=-17,5x+6+0,3x
10x=-15
x=-1,5
a)
6x-77-14x +2= -60+4x+3x
6x-14x -4x-3x = -60 -2 +77
-15x = 15 /:(-15)
x= -1
b)
15x+9 =7x+35-6+3x
15x-7x-3x= 35-6-9
5x=20 /:5
x=4
c)
2x-2+4x-12= -3x +6+9x
2x+4x+3x-9x=6+12+2
x=0
d)
5x-18+24x= x-7x-28
5x+24x-x+7x= -28 +18
35x= -10 /:35
x= 0,28
e)
2x+16x-24-6x+18=15x+5+2x-11
2x+16x-6x-15x -2x=5-11 -18+24
-3x=0 /:(-3)
x=0
f)
21-7,2x = -17,5x +6 +0,3x
-7,2x+17,5x -0,3x=6-21
10x= -15 /:10
x= -1,5