Question

15) Efetue, com cálculos

a) 12a+24a+15a=

b) 32b+21b+5b=

c) 28x-15x=

d)38z-46z=​

Answer 1

Resposta:

A) 51a

B) 58b

C) 13x

D) -8z

Explicação passo-a-passo:

A) 12a+24a+15a

12a+24a+15a

(12+24+15)a

12+24+15

36+15

51

(12+24+15)a

51a

Resposta

51a

B)32b+21b+5b

32b+21b+5b

(32+21+5)b

32+21+5

53+5

58

(32+32+5)b

58b

Resposta

58b

C) 28x-15x

28x-15x

(28-15)x

13x

Resposta

13x

D) 38z-46z

38z-46z

(38-46)z

38-46

-(46-38)

-8

(38-46)z

-8z

Resposta

-8z