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x=1,847-9
x=-7,125
b) 8a+4=36
8a=36-4
8a=32/:8
a=4
c)6b-3=-9
6b=-9+3
6b=-6/:6
b=-1
d)-2,5c-8=17
-2,5c=17+8
-2,5c=25/:(-2,5)
c=-10
e)0,4m-2=-6
0,4m=-6+2
0,4m=-4/:0,4
m=-10
x= 1⅞-9
x=-16/8
x=-2
8a+4=36
8a=32 /÷8
a=4
6b-3=9
6b=12 /÷6
b=2
-2,5c-8=17
-2,5c=25 /÷(-2,5)
c= -0,1
0,4m-2=-6
0,4m=-4 /÷0,4
m=-0,1