Question

Rozwiąż rownania pliska

Answer 1

Zadanie

a)

3·x + 8 = 23    l -8

3·x = 15    l :3

x = 5

b)

c)

1 - 8·x = -10 + 3·x    l -1

-8·x = -11 + 3·x    l - 3·x

-11·x = -11    l :(-11)

x = 1

d)

-4·x - (-7) + 9·x - 3,5 = 18,5 - 2·x

5·x + 3,5 = 18,5 - 2·x     l -3,5

5·x = 15 - 2·x     l +2·x

7·x = 15     l :7