Question
Add the following expressions: $8a - 6ab + 5b, -6a - ab - 8b$ and $-4a + 2ab + 3b$
✓
Answer
Required expression: $= (8a - 6ab + 5b) + (-6a - ab - 8b) + (-4a + 2ab + 3b)$
Collecting positive and negative like terms together,
we get $8a - 6a - 4a - 6ab - ab + 2ab + 5b - 8b + 3b $
$= 8a - 10a - 7ab + 2ab + 8b - 8b$
$ = -2a - 5ab$
Collecting positive and negative like terms together,
we get $8a - 6a - 4a - 6ab - ab + 2ab + 5b - 8b + 3b $
$= 8a - 10a - 7ab + 2ab + 8b - 8b$
$ = -2a - 5ab$
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