Question

subract 3x+6y+8from 12x-2y+3​

Answer 1

$\left(12x-2y+3\right)-\left(3x+6y+8\right)$

$=12x-2y+3-\left(3x+6y+8\right)$

$=12x-2y+3-3x-6y-8$

$=9x-8y-5$