1)
½(x-1)=4
½x-½=4
½x=4+½
½x=4½ I:½
x=9
2)
-¼(2+x)=¾x
-½-¼x=¾x
-¼x-¾x=½
-x=½ I:-
x=-½
3)
-2(x+½)-3(x-⅓)=0
-2x-1-3x+1=0
-5x=0 I:(-5)
x=0
4)
(x+2)*6=0.5x
6x+12=0.5x
6x-0.5x=-12
5.5x=-12 I:5.5
x≈-2.18
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1)
½(x-1)=4
½x-½=4
½x=4+½
½x=4½ I:½
x=9
2)
-¼(2+x)=¾x
-½-¼x=¾x
-¼x-¾x=½
-x=½ I:-
x=-½
3)
-2(x+½)-3(x-⅓)=0
-2x-1-3x+1=0
-5x=0 I:(-5)
x=0
4)
(x+2)*6=0.5x
6x+12=0.5x
6x-0.5x=-12
5.5x=-12 I:5.5
x≈-2.18