1) (3а+5b-4)+(7b-3a+10) = 3а+5b-4+7b-3a+10 = 12b+6
2) (5m+8n)-(m-4n)-(5+4m+12n) = 5m+8n-m+4n-5-4m-12n = -5
3) 3(x+5y)-(10y+12x)+(25x+37y) = 3x+15y-10y-12x+25x-37y = 16x+42y
1) (3а+5b-4)+(7b-3a+10) = 3а+5b-4+7b-3a+10 = 12b+6
2) (5m+8n)-(m-4n)-(5+4m+12n) = 5m+8n-m+4n-5-4m-12n = -5
3) 3(x+5y)-(10y+12x)+(25x+37y) = 3x+15y-10y-12x+25x-37y = 16x+42y