Bonjour,
(-2 - 7x)/(-5) = -23
⇔- 2 - 7x = -23 × (-5)
⇔ -2 - 7x = 115
⇔ -7x = 115 + 2
⇔ -7x = 117
⇔ x = -117/7
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Bonjour,
(-2 - 7x)/(-5) = -23
⇔- 2 - 7x = -23 × (-5)
⇔ -2 - 7x = 115
⇔ -7x = 115 + 2
⇔ -7x = 117
⇔ x = -117/7