Question

-3,2n+4,8=-2*(1,2n+2,4) помогите решить

Answer 1

-3.2n+4.8=-2*(1.2n+2.4)

-3.2n+4.8=-2.4n-4.8

-3.2n+2.4n=-4.8-4.8

-0.8n=-9.6

n=-9.6:(-0.8)

n=12

ОТВЕТ: 12

Answer 2

-3,2n+4.8 = -2*(1.2n+2.4)

-3.2n+4.8 = -2.4n - 4.8

4.8+4.8 = -2.4n+3.2n

9.6 = 0.8n

n = 9.6/0.8

n = 12

Проверяем: 

-3.2*12+4.8 = -2*(1.2*12+2.4)

-38.4+4.8 = -33.6

Ответ: 12.