Question

Simplify 22 + 6(3) – 7 and 5x − 2y + 3z − 2x − y + 4z

Answer 1

$22+6(3)-7=22+18-7=40-7=33$

$5x-2y+3z-2x-y+4z\qquad|\text{combine like terms}\\\\=(5x-2x)+(-2y-y)+(3z+4z)=3x-3y+7z$