Question

Rozwiąż równania :
a)
[tex]10x + 7 = 20[/tex]
b)
[tex] - 4x + 5 = - 7x - 1[/tex]
c)
[tex]3(x + 6) - x = 4(x + 2)[/tex]
d)
[tex] - (5 + x) = 3(2 - x)[/tex]
Daje Naj. Pls potrzebne na teraz! ​

Answer 1

a) 10x + 7 = 20

10x = 13

x = 1,3

b) -4x + 5 = -7x -1

3x = -6

x = -2

c) 3(x+6) - x = 4(x+2)

3x + 18 - x = 4x +8

-2x = -10

x = 5

d) -(5+x) = 3(2-x)

-5 - x = 6 - 3x

2x = 11

x = 5,5