rozwiąż równania
a)5x+2=7-3x
b)3(x-1)=0
c)-6(x+1)=24
d)-7(x-2)=3x-1
e)4(x-1)=6(1+x)
z obliczeniami!!!
a)5x+2=7-3x /-2
5x=5-3x/-3x
2x=5/:2
X=2,5
3x-3=0 /+3
3x=3/:3
X=1
c)-6 (x+ 1)=24
-6x – 6=24/+6
-6x=30 /· (-1)
6x=-30/ :5
X=-6
d) -7 (x-2)=3x-1
-7x+14=3x-1 / +7x
14=10x-1/+1
15=10x /:10
1,5=x
e) 4(x-1)= 6(1+x)
4x-4=6+6x
-4-6=6x-4x
-10=2x /:2
-5=xe) (metoda przenoszenia)
a) 5x +2 =7 -3x
5x +3x = 7 -2
8x = 5 /:8
x = 5/8
b) 3(x-1) =0
3x -3 = 0
3x = 3 /:3
x = 1
c) -6(x+1) = 24
-6x -6 = 24
-6x = 24 + 6
-6x = 30 /:(-6)
x = -5
d) -7(x-2) =3x -1
-7x +14 = 3x -1
-7x -3x = -1 -14
-10x = -15 /:(-10)
x = 15/10
x =3/2
e) 4(x-1) =6(1+x)
4x -4 = 6 + 6x
4x -6x = 6 +4
-2x = 10 /:(-2)
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a)5x+2=7-3x /-2
5x=5-3x/-3x
2x=5/:2
X=2,5
b)3(x-1)=0
3x-3=0 /+3
3x=3/:3
X=1
c)-6 (x+ 1)=24
-6x – 6=24/+6
-6x=30 /· (-1)
6x=-30/ :5
X=-6
d) -7 (x-2)=3x-1
-7x+14=3x-1 / +7x
14=10x-1/+1
15=10x /:10
1,5=x
e) 4(x-1)= 6(1+x)
4x-4=6+6x
-4-6=6x-4x
-10=2x /:2
-5=x
e) (metoda przenoszenia)
a) 5x +2 =7 -3x
5x +3x = 7 -2
8x = 5 /:8
x = 5/8
b) 3(x-1) =0
3x -3 = 0
3x = 3 /:3
x = 1
c) -6(x+1) = 24
-6x -6 = 24
-6x = 24 + 6
-6x = 30 /:(-6)
x = -5
d) -7(x-2) =3x -1
-7x +14 = 3x -1
-7x -3x = -1 -14
-10x = -15 /:(-10)
x = 15/10
x =3/2
e) 4(x-1) =6(1+x)
4x -4 = 6 + 6x
4x -6x = 6 +4
-2x = 10 /:(-2)
x = -5