Question

Equação que apresenta denominadores. A. X/2 - x/4 - 1/2 ???

B. X/2 - x/4 = 5 ???

C. X/5 + x/2 = 7/10 ???

D. X/5 + 1 =2/3 x ???

Answer 1

Resposta:

A. X/2 - x/4 - 1/2 =0

(2x-x)/4=1/2

x/4=1/2

x=(1/2).4

x=4/2

x=2

=================

B. X/2 - x/4 = 5

(2x-x)/4 = 5

x=5.4

x=20

=================

C. X/5 + x/2 = 7/10

(2x+5x)/10=7/10

7x/10=7/10

7x=(7/10).10

7x=7

x=1

=================

D. X/5 + 1 =(2/3)x

x/5-2x/3=-1

(3x-10x)/15=-1

-7x=-1.(15)

-7x=-15

x≈2,14