Question

Реши неравенство 2(9−3y)+4(9−y)≤60

Answer 1

2(9-3y)+4(9-y)≤60

18-6y+36-4y≤60

54-10y≤60

-10y≤60-54

-10y≤6

y≤6:(-10)

y≤ -0,6