Fourteen per cent of Americans live below the poverty level, $ 16,700 a year for a family of four. Among the poor there are a lot of homeless people. To 'fill their empty cups'

А) 3 (5-x)+13=4 (3x-8) 15-3x+13=12x-32 -12x-3x=-13-32-15 -15x=-60 x=-60÷(-15) x=4 навєрно так...

Б) 4,2у-3,5=0,4у-1,2-1,16 4,2у-0,4=3,5-1,2-1,16 3,8у=1,14 у=0,3