Simplify -3a+4b-6a+81b-114b+31a-a-b

$- 3 a + 4 b - 6 a + 81 b - 114 b + 31 a - a - b$

Subtract $6 a$ from $- 3 a$ .

$- 9 a + 4 b + 81 b - 114 b + 31 a - a - b$

Add $- 9 a$ and $31 a$ .

$22 a + 4 b + 81 b - 114 b - a - b$

Subtract $a$ from $22 a$ .

$21 a + 4 b + 81 b - 114 b - b$

Add $4 b$ and $81 b$ .

$21 a + 85 b - 114 b - b$

Subtract $114 b$ from $85 b$ .

$21 a - 29 b - b$

Subtract $b$ from $- 29 b$ .

$21 a - 30 b$

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