bonsoir,svp aider moi.... Pergunta de ideia deritalawand01

ritalawand01 @ritalawand01

July 2022 1 132 Report

bonsoir,svp aider moi

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trc

Réponse:

$b = \frac{105}{3} - \frac{1}{2} + \frac{4}{7}$

pour

$\frac{105}{3}$

simplifier par 3

$\frac{105}{3} = \frac{35 \times 3}{3 \times 1} = 35$

Alors

$b = \frac{105}{3} - \frac{1}{2} + \frac{4}{7} \\ = 35 - \frac{1}{2} + \frac{4}{7}$

Réduire au même dénominateur 14

$35 - \frac{1}{2} + \frac{4}{7} \\ = \frac{(35 \times 14) - (1 \times 7) + (4 \times 2)}{(1 \times 14 ) - (2 \times 7) + (7 \times 2)} \\ = \frac{490 - 7 + 8}{14} \\ = \frac{498 - 7}{14} \\ = \frac{491}{14}$

Et voilà j'espère t'avoir aidé bonne soirée

1 votes Thanks 2

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