Question

RESOLVA AS EXPRESSÕES ALGEBRICAS:

A= 7x-4 B= 9 -3x C= 9x +14 D=10 - 6x

a)A`+B
b)A-B
c)C+D
d)C-d
e)A+B-C-D
f)A-B+C-D

Answer 1

a) A + B = (7x - 4) + (9 - 3x)

= 7x - 4 + 9 - 3x

= 4x + 5

b) A - B = (7x - 4) - (9 - 3x)

= 7x - 4 - 9 + 3x

= 10x - 13

c) C + D = (9x + 14) + (10 - 6x)

= 9x + 14 + 10 - 6x

= 3x + 24

d) C - D = (9x + 14) - (10 - 6x)

= 9x + 14 - 10 + 6x

= 15x + 4

e) A + B - C - D = (A + B) - (C + D)

= (4x + 5) - (3x + 24)

= 4x + 5 - 3x - 24

= x - 19

f) A - B + C - D = (A - B) + (C - D)

= (10x - 13) + (15x + 4)

= 10x - 13 + 15x + 4

= 25x - 9