1. Rozwiąż równanie.
a) 2 (x - 1/2) - x + 3 = 3
b) 0 = 3 - 2 (2x + 1)
c) 0 = (x - 1 ) - (3x - 5)
d) ( - 1/2 x + 1) + 3x / 2 = 3
e) 3 (1 - x) - (1x 2x) = 9
f) 0,5 (0,2 - 4x) = 3 - x
2. Rozwiąż równanie.
a) 12 y - (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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1.
a) 2x-1-x+3=3
x=1
b)0=3-2(2+1)
0=3-4+2=1
c)0=x-1-3x+5
2x=4
x=2
d) w drugim nawiasie nie ma znaku
e)0,1-2x=3-x
-x=2,9
x=2,9
2.
a)12y-y-5=10y-1
y=4
b)2u-10+15=3u-12+10
-u=-7
u=7
2.
a) 12y -y - 5 = 10y - 1
11y= 4/ :11
y= 4/11
b) 2u - 10 + 15 = 3u - 12 + 10
-u=-7/ : (-1)
u=7
c) -y - 3 - 2= 4 - 4y
3y = 6 / :3
y = 2
d) 6a - 4 - 6= 9a - 4,5 + 0,5
-3a = 6 / : (-3)
a = -2
1.
a) 2x - 1 - x +3 = 3
x= 1
b) 0= 3-4x - 2
4x=1
x= 1/4
c) 0= x - 1 - 3x +5
-x= 4/ : (-1)
x = -4
d) - 1/2 x + 1 = 3x/2 = 3
-2x= 2 / : (-2)
x = -1
e) 3 - 3x - 2x = 9
- 5x = 6
x = -5/6
f) 0,1 - 2x = 3 - x
- x = 2,9
x= -2,9