Реши уравнение: 1500:(х + 400) = 3, 1500:(700-а) = 3 , 3600:(b - 100) = 6.

1500/x+400 = 31500=3x+1200-3x=1200-1500-3x=-300x=1001500/700-a = 31500=2100-3a3a=2100-15003a=600a=2003600/b-100 = 63600=6b-600-6b= -600-3600-6b= -4200b=700

1500 : (х + 400) = 3х + 400 = 1500 : 3х + 400 = 500х = 500 - 400х = 100---------------------------1500 : (700 - а) = 3700 -а = 1500 : 3700 - а = 500а = 700 - 500а = 200---------------------------3600 : (b - 100) = 6b - 100 = 3600 : 6b - 100 = 600b = 600 + 100b = 700---------------------------