Question

(4/5)(-6/7) =
$3$
$(4 \5)( - 6 \7)$

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Answer 1

Explicación paso a paso:

Resolvamos:

e)

$\frac{4}{5}\times \frac{-6}{7}\\\\\frac{4 \times -6}{5 \times 7}\\\\\frac{-24}{35}$

f)

$\frac{3}{5}\div \frac{2}{9}\\\\\frac{3}{5}\times \frac{9}{2}\\\\\frac{3 \times 9}{5 \times 2}\\\\\frac{27}{10}$

g)

$\frac{2}{4} + \frac{7}{2}- \frac{4}{3}- \frac{5}{2}\\\\\frac{(2)(3) +(7)(6) -(4)(4) -(5)(6) }{12} \\\\\frac{6+42-16-30}{12} \\\\\frac{2}{12} \\\\\frac{1}{6}$

h)

x/2 = 12/6

(x) × (6) = (12) × (2)

6x = 24

x = 24/6

x = 4

i)

3/x = 2/5

(3) × (5) = (2) × (x)

15 = 2x

15/2 = x

7,5 = x