Решите уравнения: 3х=-15 -7х=-21 -25х=5 9х=-81

Question

Решите уравнения:
3х=-15
-7х=-21
-25х=5
9х=-81

Answer 1

3х=-15
х=-15:3
х=-5

-7х=-21
х=-21:-7
х=3

-25х=5
х=5:-25
х=-0.2

9х=-81
х=-81:9
х=-9

Comments

спс

Answer 2

Х=-15:3
х=-5

х=-21:(-7)
х=3

х=-25:5
х=-5

х=-81:9
х=-9