Question

[3 x 2] x [3 + 4] + [ 12 x 2] - [3 x 15]

Answer 1

Resposta:

$\left[3\:\times \:2\right]\:\times \:\left[3\:+\:4\right]\:+\:\left[\:12\:\times 2\right]\:-\:\left[3\:\times \:15\right]$

$=6\times \:\left[3+4\right]+\left[12\times \:2\right]-\left[3\times \:15\right]$

$=6\times \:7+\left[12\times \:2\right]-\left[3\times \:15\right]$

$=6\times \:7+24-\left[3\times \:15\right]$

$=6\times \:7+24-45$

$=42+24-45$

= 21

Explicação:

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