Subtract the sum of `(8a - 6a^(2) + 9)` and `(-10a - 8 + 8a^(2))` from -3

Subtract the sum of 10m - 8n + 6p^(2) "and" - 7m - 4n + 12p^(2) from the sum 2m - 4n + 6p^(2) "and" m-8n + 12p^(2) .

Subtract the sum of 5x - 4y + 6z and -8x + y - 2z from the sum of 12x - y + 3z and -3x + 5y - 8z

Subtract the sum of -8 and -28 from the sum of -13 and 31.

Subtract 3/8 from 7/8

Subtract 2.5307 from 8

From the sum of 3x^(2) - 5x + 2 and -5x^(2) - 8x + 6 subtract 4x^(2) - 9x + 7

Subtract the sum of 2a+3b,a-2b+c,-a+2c and 4a+2b-5 from 6a-4b+8

Subtract : -2abc" from "- 8abc