rozwiąż równania ;
a) 1/3 x - 2 = x+2
b) 1-6/7x=4/7
c) 6(1/4x - 2)=18
d) x /6 - 1/6=1
e) -2(2x-1)= x/3
f) 2/5 (3-x)= -2
g)3/4(2-3x)=-6
h) 1/5 (x-3) = 9-x
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a)
1/3 x - 2= x+2 /*3
x-6=3x+6 /-3x
-2x-6=6 /+6
-2x=12 /:(-2)
x=-6
b) 1- 6/7x = 4/7 /*7
7-6x=4 /-7
-6x=-3 /:(-6)
x=1/2
c) 6(1/4x-2)=18
1 i 1/2x-12=18 /+12
1 i 1/2x=30 /:1 i 1/2
x=20
d) x/6 - 1/6= 1 /*6
x-1=6/+1
x=7
e)
-2(2x-1)= x/3
-4x+2=x/3 /*3
-12x+6=x
x=-12x+6 /+12x
13x=6 /:13
x=6/13
f)
2/5 (3-x)= -2
6/5-2/5x=-2 /-6/5
-2/5x=4/5 /:(-2/5)
x=-2
g) 3/4 (2-3x) = -6
1 i 1/2 - 4 i 1/2 x=-6/-1 i 1/2
-4 i 1/2x=-4 i 1/2 /:(-4 i 1/2)
x=1
h) 1/5 ( x-3)= 9-x
1/5x-3/5=9-x /-3/5
1/5x=42/5 -x /*5
x=42-x /+x
2x=42 /:2
x=21
Czy o to chodziło ?:)