Question

3x/12+4x/12+375.12(multiplicadopor12)/12=12x/12
Lembrando que é 375 vezes 12 /12

Answer 1

$\frac{3x}{12}+ \frac{4x}{12}+375* \frac{12*12}{12} = \frac{12x}{12}$
$(12/12=1)$
$\frac{3x}{12}+ \frac{4x}{12}+375 = \frac{12x}{12}$
$\frac{7x}{12}+375 = \frac{12x}{12}$(MMC 12,1)
$\frac{7x}{12}+ \frac{4500}{12} = \frac{12x}{12}$(ANULANDO BASE 12)
${7x}+ {4500} = {12x}$
${4500} = {12x -7X}---->5X=4500$
$X=4500/5$
$X=900$