Question

Considere A = - x - 2y + 10, B = x + y + 1 e C = - 3x - 2y + 1. Determine o valor de A-B+C

Answer 1

Resposta letra C

x-2y+10-x+y+1-3x-2y+1=

-x-x-3x-2y+y-2y+10+1+1=

-5x-3y+12