Question

quanto é

a) /4 - 5/3 = 1/12

b) y -2 = 3/2

c) 2z + 3 = z + 2/3


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Answer 1

Resposta:

A)

$4 - \frac{5}{3} = \frac{1}{12} \\ \frac{12}{3} - \frac{5}{3} = \frac{1}{12} \\ \frac{12 - 5}{3} = \frac{1}{12} \\ \frac{7}{3} = \frac{1}{12} \\ \frac{28}{12} = \frac{1}{12} \\ \\ false$

B)

$y - 2 = \frac{3}{2} \\ y = \frac{3}{2} + \frac{4}{2} \\ y = \frac{3 + 4}{2} \\y = \frac{7}{2} \\ y = \frac{7}{2} = 3 \frac{1}{2} = 3.5$

C)

$2z + 3 = z + \frac{2}{3} \\ 2z + 3 = \frac{2}{3} \\ z + 3 = \frac{2}{3} \\ z = \frac{2}{3} - 3 \\ z = \frac{2}{3} - \frac{9}{3} \\ z = \frac{2 - 9}{3} \\ z = - \frac { 7}{3} \\ z = - \frac{7}{3} = - 2 \frac{1}{3}$

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