Rozwiąż równania:
a)1/3x+2=x
b)-7(2x+1)=4
c)3-x/2+x+2/2=1/2
d)1/4x-x-1/4=1/4
a) ⅓x+2=x
2=x-⅓x
2=⅔x |÷⅔
2÷⅔=x
x=3
b) -7(2x+1)=4
-14x-7=4 |+7
-14x=11 |÷(-14)
x=-11/14
c) 3-x/2+x+2/2=1/2
-x/2+x=-3½
x/2=-3½ |×2
x=-7
d) ¼x-x-¼=¼ |+¼
¼x-x=½
-¾x=½
¾x=½
x=-⅔
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a) ⅓x+2=x
2=x-⅓x
2=⅔x |÷⅔
2÷⅔=x
x=3
b) -7(2x+1)=4
-14x-7=4 |+7
-14x=11 |÷(-14)
x=-11/14
c) 3-x/2+x+2/2=1/2
-x/2+x=-3½
x/2=-3½ |×2
x=-7
d) ¼x-x-¼=¼ |+¼
¼x-x=½
-¾x=½
¾x=½
x=-⅔