Question

a) 2:a = 8
d) C: 8 = 2​

Answer 1

Resposta:

a)

$2 \div a= 8 \: é\: \: igual \: a : \\ \\ \dfrac{2}{a} \times \red{a} = 8 \times \red{a} \\ \\ \dfrac{2 \div 2}{8 \div 2} = \dfrac{8a}{8} \\ \\ \dfrac{1}{4} = a \\ \ \ \\ \green{a = \dfrac{1}{4} }$

d)

$c \div 8 = 2 \: é\: igual \: a : \\ \\ \frac{c}{8} \red{ \times 8}= 2 \red{ \times 8} \\ \\ \green{c = 16}$

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