rozwiąż równania.
a) 10x + 4 = 7
b) 4x - 3 = 9
c) -2x + 2 = -7
d) 6x + 5 = 4x
e) 9x - 3 = 2x + 5
f) -3x + 4 = - 5 - 1



Odpowiedź :

a) 10x= 3
x= 3/10 = 0,3
b) 4x= 12
x= 3
c) -2x= -9
x= 9/2= 4,5
d) 6x-4x= -5
2x= -5
x= -5/2= -2,5
e) 9x-2x= 8
7x= 8
x= 8/7
f) -3x= -6-4
-3x = -10
x= 10/3

a) 10x + 4 = 7

10x = 7 - 4

10x = 3 /: 10

x = 0,3

b) 4x - 3 = 9

4x = 9 + 3

4x = 12/: 4

x = 3

c) -2x + 2 = -7

-2x = - 7 - 2

-2x = -9/: (-2)

x = 4,5

d) 6x + 5 = 4x

6x - 4x = - 5

2x = - 5 /: 2

x = - 2,5

e) 9x - 3 = 2x + 5

9x - 2x = 3 + 5

7x = 8/: 7

x = 1,14

f) -3x + 4 = - 5 - 1

-3x = - 5 - 1 - 4

-3x = - 10/: (-3)

x = 3, (3)