(6m+5)-(m-1) (2x+y)-(x+y) (2m-3n)+(2m+3n) Раскройте скобки и решите плиззззззз
(6m+5)-(m-1) = 6m+5-m+1 = 5m+6 (2x+y)-(x+y) = 2x+y-x-y = x (2m-3n)+(2m+3n) = 2m-3n+2m+3n = 4m