Bonjour pouvez vous m’aidez je n’ai pas compris l’ex merci.... Pergunta de ideia dekylianouahbi

May 2021 1 70 Report

Bonjour pouvez vous m’aidez je n’ai pas compris l’ex merci

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Mart1Krasco

Bonjour,

$A = 3(\frac{1}{4}+x)-\frac{1}{4}\\\\A = \frac{3}{4}+3x- \frac{1}{4}\\\\A = \frac{3}{4}+- \frac{1}{4}+3x\\\\A = \frac{2}{4}+3x\\\\A = \frac{1}{2}+3x$

$B = \frac{2}{3}x + 5(x-\frac{1}{6})\\\\B = \frac{2}{3}x + 5x-\frac{5}{6}\\\\B = \frac{2}{3}x + \frac{5}{1} x-\frac{5}{6}\\\\B = \frac{2}{3}x + \frac{5*3}{1*3} x-\frac{5}{6}\\\\B = \frac{2}{3}x + \frac{15}{3}x - \frac{5}{6} \\\\B = \frac{17}{3}x - \frac{5}{6}$

$C = \frac{3}{4}(x-5)+\frac{1}{2} \\\\C = \frac{3}{4}x-\frac{15}{4} +\frac{1}{2} \\\\C = \frac{3}{4}x-\frac{15}{4} +\frac{1*2}{2*2}\\\\C = \frac{3}{4}x-\frac{15}{4} +\frac{2}{4}\\\\C = \frac{3}{4}x-\frac{13}{4}\\\\C = \frac{1}{4}(3x-13)$