Question

Ecuaciones
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Answer 1

Respuesta:

a. x = 2/3

b. x = 7/10

c. x = 1/3

d.  x = 14/105

Explicación paso a paso:

a. x + 1/3 = 1

x = 1 - 1/3 = 3/3 - 1/3 = 2/3

x = 2/3

b. x - 2/5 = 3/10

x = 3/10 +  2/5

x = 3/10 + 4/10 = 7/10

x = 7/10

c. 1/2x + 1/3 = 1/2

 1/2x = 1/2 - 1/3

x = 2( 1/2 - 1/3) = 2/2 - 2/3 = 3/3 - 2/3 = 1/3

d. 7x - 3/5 = 1/3

  7x = 1/3 + 3/5

  7x = (5 + 9)/15

  7x = 14/15

  x = 14/105