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b) (-3x)=7
c)2x=1/5
d)1,2x=4,8
e)1/3x=3
f)(-3/5)=(-5)
g)3/4x=(-4/9)
h)0,1x=(-7)
x= 0,5
b) (-3x)=7 /:-3
x= -2,3(3) lub - 2 1/3
c)2x=1/5
2x= 0,2 / :2
x= 0,1
d)1,2x=4,8 / :1,2
x= 4
e)1/3x=3 / *3
x=9
g)3/4x=(-4/9) / : 3/4
x=-16/27( -4/9 * 4/3= -16/27)
h)0,1x=(-7) / *10
x= -70