Rozwiąż równania.
a) -3x= 15
b) 2x-1=4x+4
c)-4-3x=10
d)
e)
f)
g) 2 ( x+1 ) = 5
h)0.2x + 1,4x=2-0,5x
a. -3x= 15 /:(-3)
x= -5b. 2x - 1 =4x +4
-2x= 5 /:(-2)
x= -5/2
x= -2 1/2
c. -4 - 3x= 10
-3x= 14 /:(-3)
x= -4 2/3
d. x/2 + 3= 5 / *2
x + 6= 10
x= 4
e. -2-x/4 =x (*4)
-8 -x = 4x
-8= 5x
x= -8/5
x= -1 3/5
f. 2 1/2x = -4 /* 2x
2= -8x /:(-8)
x= -2/8
x= - 1/4
g. 2(x + 1=5
2x + 2=5
2x= 3 /:2
x= 3/2
x= 1 1/2
h. 0,2x + 1,4x = 2 - 0,5x
0,2x + 1,4x + 0,5x= 2
2,1x= 2
x= 2/2,1
x= 20/21
a)-3x=15/:-3= -5
b)2x-1=4x+4=
2x-4x=1+4
-2=5/:-2
x=-2,5
c) -4-3x=10
-3x=10+4
-3x=14 /:-3
x= 4 i dwie trzecie
g) 2(X+1)=5
2x+2=5
2x=3/:2
x=1,5
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a. -3x= 15 /:(-3)
x= -5
b. 2x - 1 =4x +4
-2x= 5 /:(-2)
x= -5/2
x= -2 1/2
c. -4 - 3x= 10
-3x= 14 /:(-3)
x= -4 2/3
d. x/2 + 3= 5 / *2
x + 6= 10
x= 4
e. -2-x/4 =x (*4)
-8 -x = 4x
-8= 5x
x= -8/5
x= -1 3/5
f. 2 1/2x = -4 /* 2x
2= -8x /:(-8)
x= -2/8
x= - 1/4
g. 2(x + 1=5
2x + 2=5
2x= 3 /:2
x= 3/2
x= 1 1/2
h. 0,2x + 1,4x = 2 - 0,5x
0,2x + 1,4x + 0,5x= 2
2,1x= 2
x= 2/2,1
x= 20/21
a)-3x=15/:-3= -5
b)2x-1=4x+4=
2x-4x=1+4
-2=5/:-2
x=-2,5
c) -4-3x=10
-3x=10+4
-3x=14 /:-3
x= 4 i dwie trzecie
g) 2(X+1)=5
2x+2=5
2x=3/:2
x=1,5