Rozwiąż równanie. :
a) 1/2x + 4 = -6
b) 0,6 - 3/4x = - 1/3
c)3x -4=5x+2
d) 7-2x=7x-2
e) 2/3 (6x-9) = 12
f) 1/10(25x-40) +2 = 3/4( 8x +12) - 9
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a)0,5x=-6-4
0,5x=-10
x=-20
b)0,6 - 3/4x = - 1/3 | x12
7,2-9x=-4
-9x=-11,2
x=1,24
c)3x-4=5x+2
3x-5x=2+4
-2x=6
x=-3
d)7-2x=7x-2
x=0 sprzeczne
e)2/3(6x-9)=12 |* 3
2(6x-9)=36
12x-18=36
12x=36+18
12x=54
x=4,5
f) 1/10(25x-40)=3/4(8x+12)-9 |*40
4(25x-40)=30(8x+12)-360
100x-160=240x+360-360
100x-240x=160
-140x=160
x=-7/8
a) 1/2x + 4 = -6
1/2x=-6-4
1/2x=-10:1/2
x=-20
spr'
1/2razy(-20)+4=-6
-10+4=-6
-6=-6
b) 0,6 - 3/4x = - 1/3| x12
7,2-9x=-4
-9x=-11,2
x=1,24
spr.
0,6 - 3/4x = - 1/3
0.6-3/4razy1.24=-1/3
0.6-0.75razy1,24=-1/3
0.6-0.93=-1/3
-0.33333=-0.33333
c)3x -4=5x+2
3x-5x=2+4
-2x=6:(-2)
x=-3
spr.
3x -4=5x+2
3razy(-3)-4=5razy(-3)+2
-9-4=-15+2
-13=-13
d) 7-2x=7x-2
-2x-7x=-2-7
-9x=-9:(-9)
x=1
spr.
7-2x=7x-2
7-2razy1=7razy1-2
7-2=7-2
5=5
e) 2/3 (6x-9) = 12|* 3
2(6x-9)=36
12x-18=36
12x=36+18
12x=54
x=4,5
spr.
2/3 (6x-9) = 12
2/3 (6razy4.5-9) = 12
2/3(27-9)=12
54/3-18/3=12
36/6=1212=12
12=12
f) 1/10(25x-40) +2 = 3/4( 8x +12) - 9
25/10x-40/10+2=24/4x-12-9
2.5x-6x=4-21
-3.5x=17
-35/10x=17
x=17razy(-10/35)
x=-170/35
x=-34/7
x=-4 6/7