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5x=15
x=3
b)8x-3=-27
8x=-24
x=-3
c)1,2x+3=6
12/10 *x=3
12x=30
x=2,5
d)0,5x-1=1,5
1/2 *x=2,5
x=5
e)2(x+2)=10
2x+4=10
2x=6
x=3
f)-3(2x-1)=-15
-6x+3=-15
-6x=-18
x=3
g)1,5(10x+5)=7
15/10*(10x+5)=7
15(10x+5)=70
150x+75=70
150x=-5
x=-1/30
h)0,4(3x-2)=4
4/10*(3x-2)=4
4(3x-2)=40
3x-2=10
3x=12
x=4
5x=15
x=3
b)8x=-24
x=-3
c)1,2x=3
x=2,5
d)0,5x=2,5
x=5
e)2x+4=10
2x=6
x=3
f)-6x+3=-15
6x=18
x=3
g)15x+7,5=7
15x=-0,5
x=0,0333...
h)0,4(3x-2)=4
1,2x-0,8=4
1,2x=4,8
x=4
5x+9=24 | -9
5x=15 | :5
x=3
b).
8x-3 =-27 |+3
8x= -24 | :8
x= -3
c).
1,2x+3=6 | -3
1,2x=3 | :1,2
x=2,5
d).
0,5x-1=1,5 | +1
0,5x=2,5 |:0,5
x=5
e).
2(x+2)=10
2x+4=10 | -4
2x=6 |:2
x=3
f).
-3(2x-1)=-15
-6x+3=-15 | -3
-6x = -18 | :(-6)
x = 3
g).
1,5(10x+5)=7
15x+7,5=7 | -7,5
15x = -0,5 |:15
x= 0,03(3)
h).
0,4(3x-2)=4
1,2x-0,8=4 | +0,8
1,2x=4,8 |:1,2
x=4