Question

Sendo que A=5x+3x-14 e B=2x+5+11
Quanto seria

B-A

A-B

A+B

Answer 1

Resposta:

B-A=-6x +30

A-B = 6x - 30

A+B = 10x + 2

Explicação passo-a-passo:

B-A= (2x+5+11) - (5x+3x-14) = 2x + 16 -5x -3x + 14 = (2x-5x-3x) + (16+14)= -6x +30

A-B = (5x+3x-14) - (2x+5+11) = 8x -14 -2x-5-11 = (8x-2x)+ (-14-5-11)= 6x - 30

A+B = (5x+3x-14) + (2x+5+11) = (5x+3x+2x) + (-14+5+11) =  10x + 2

Answer 2

B-A>

2x + 5 + 11 - 5x + 3x - 14

2x - 5x + 3x + 5 + 11 - 14

0x + 2 (ou 0 e 2)

A-B>

5x + 3x - 14 - 2x + 5 + 11

5x + 3x - 2x - 14 + 5 + 11

6x - 2

A+B>

5x + 3x - 14 + 2x + 5 + 11

5x + 3x + 2x - 14 + 5 + 11

10x - 2