bonjour aidez moi a resoudre les équations silvouplais :) a) -5(x+2)+3(x-3)=7 c) 4(-x+1)-2(3x-5)=0 d) 7(2x-6)-4(5x-8)=-5x
Mathématiques
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Question
bonjour aidez moi a resoudre les équations silvouplais :)
a) -5(x+2)+3(x-3)=7
c) 4(-x+1)-2(3x-5)=0
d) 7(2x-6)-4(5x-8)=-5x
a) -5(x+2)+3(x-3)=7
c) 4(-x+1)-2(3x-5)=0
d) 7(2x-6)-4(5x-8)=-5x
1 Réponse
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1. Réponse nonotata
a) -5(x+2)+3(x-3)=7
-5x-10+3x-9 = 7
-2x = 7 +10 +9
-2x = 26
x =26/-2
x = -13
c) 4(-x+1)-2(3x-5)=0
-4x+4-6x+10 =0
-10x +14 = 0
-10x = -14
x = -14/-10
x = 7/5
d) 7(2x-6)-4(5x-8)=-5x
14x -42 -20x +32 = -5x
14x+5x-20x = 42-32
-x = 10
x = -10