(2m-3n+4)+(-6m+5m-8)
↓
2m+12n-m-8
m+12n-8
(b² - 13b + 10) + (-2b² + 5)
b²-13b+10-2b²+5
-b²-13b+15
(3y - 2z) - ( 4y - 3z)
3y-2z-4y+3z
-y-2z+3z
-y+z
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Answers & Comments
(2m-3n+4)+(-6m+5m-8)
↓
2m+12n-m-8
↓
m+12n-8
↓
m+12n-8
(b² - 13b + 10) + (-2b² + 5)
↓
b²-13b+10-2b²+5
↓
-b²-13b+15
↓
-b²-13b+15
(3y - 2z) - ( 4y - 3z)
↓
3y-2z-4y+3z
↓
-y-2z+3z
↓
-y+z
↓
-y+z