1) 3(5х+2)=12
2) 11(х-3)=33
3) -х(-2)=5
4) х-5х=0​

Ответ:

1) 3(5х + 2) = 12

15x + 6 = 12

15x = 6

x = 0,4

2) 11(x - 3) = 33

x - 3 = 33 : 11

x - 3 = 3

x = 6

3) -x(-2) = 5

2x = 5

x = 2,5

4) x - 5x = 0

-4x = 0

x = 0

3(5х+2)=12 11(х-3)=33 3 не узнаю

15х+6=12 11х-33=33 4 не узнаю

15х=12-6 11х=33+33

15х=6 11х=66

х=15•6 х=66:11

х=90 х=6