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
Jak coś to Matematyka z plusem 3 str.45 zad 32
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a) 1/3x + 2 = x
1/3x - x = -2
13x- 3/3x = -2
- 2/3 x = -2 / -2/3
x = 3
b) -7 ( 2x=1) = 4
-14x - 7 = 4
-14x= 4 + 7
-14x = 11 / -14
x= -11/14
c)3-x/2+2/2=1/2 / 2
6 - x +2= 1
-x= 1-8
-x=-7 /-1
x=7
d) 1/4x - x - 1/4 = 1/4 / 4
x - 4x- 1=1
-3x=2 /-3
x= - 2/3
a)1/3+2=x
1/3x-x=-2
-2/3x=-2
x=-2*(-3/2)
x=6/2
x=3
b)-7(2x+1)=4
-14x-7=4
-14x=4+7
-14x=11
x=-11/14
c)-3-x/2+x+2/2=1/2
-x/2+x=1/2+3-1 (wszystko pomnożyć przez 2)
-x+2x=1+6-2
-x+2x=5
x=5
d)1/4x-x-1/4=1/4
1/4x-x=1/4+1/4
-3/4x=2/4
x=2/4*(-4/3)
x=-2/3
a)1/3x+2=x
2=(-1/3x)+x
2=2/3x / :2/3
3=x
x=3
b)-7(2x+1)=4
-14x+(-7)=4
-14x=4+7
-14x=11 / :(-14x)
x= (-11/14)
c)3-x/2+ x+2/2=1/2
3-x/2+x+1=1/2
x 1/2x=1/2-1-3
x 1/2x=-3 1/2 /:(1/2)
x=-7
d)1/4x- x-1/4=1/4
-3/4x=1/4+1/4
-3/4x=2/4 / :(-3/4)
x=-2/3