Question

se A = 2× + 4y +5, B= 2× + 2y -3 e C= +4x - y + 4 , então A-B+C e igual a ??

Answer 1

A = 2x + 4y + 5

B= 2x + 2y -3

C= 4x - y + 4

A-B= 2x + 4y + 5 - 2x + 2y - 3=

A-B= 6y+2

A-B+C= 6y + 2 + 4x - y + 4=

A-B+C = 4x + 5y + 6