12×(-428)-408:3= -(125:5)+385×5= 2×86-3.549:7= pake cara semua

12×(-428)-408:3= -5136-136=-5272
2. -25+1925=1900
3. 172-507= -335
smoga benar

1. 12 x (-428)-408:3 =
-5.136-408:3 =
-5.136-136 =
-5.272

2. (-125:5)+385 x 5 =
-25+385 x 5 =
-25+1.925 =
1.900

3. 2 x 86 -3.549:7 =
172-3.549:7 =
172-507 =
-335

semoga membantu #