Zad 1.
Rozwiąż równanie:
b) 0=3 - (2x + 1)
c) 0 = (x-1) - (3x - 5)
d) (-1/2x + 1) + 3x/2 = 3
e) 3(1 - x) - (1 - 2x) = 9
f) 0,5 (e - 4x) = 3-x
Zad2.
rozwiąż równanie:
a) 12y - (y+5) = 10y - 1
b) 2 (u - 5) + 15 = 3 (u - 4) + 10
c) -3 ( y/3 + 1) -2 = 4 (1 -y)
d) 2 ( 3a - 2 ) - 6= 4,5 ( 2a - 1 ) + 1/2
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0=3-[2x+1]
0=3-2x-1
-2x=-1+3
-2x=2 /:-2
x= -1
0=[x-1]-[3x-5]
0=x-1-3x+5
-3x-x=5-1
-4x=4 /:-4
x= -1
3[1-x]-[1-2x]=9
3-3x-1+2x=9
-3x+2x=9+1-3
-x=7 /*-1
x= -7
0,5[e-4x]=3-x czy tu napewno jest e?
12y-[y+5]=10y-1
12y-y-5=10y-1
12y-y-10y= -1+5
y=4
2[u-5]+15=3[u-4]+10
2u-10+15=3u-12+10
2u-3u= -12+10+10-15
-1u= -7 /*-1
u=7
-3[y/3+1]-2=4[1-y]
-y-3-2=4-4y
-y+4y=4+3+2
3y=9 /:3
y=3
2[3a-2]-6=4,5[2a-1]+1/2
6a-4-6=9a-4,5+1/2 /*2
12a-8-12=18a-9+1
12a-18a= -9+1+8+12
-6a=12 /:-6
a= -2