Question

5. Determine o valor de a:
a) a X 27 = 27 b) 45 X a = 0​

Answer 1

Resposta:

a)

$a \times 27 = 27 \\ a \times 27 \div 27 = 27 \div 27 \\ a = 1 \\ \\ \\ 45 \times a = 0 \\ 45r \times cos(0) \times a = 0 \\ r = 0$