Résoudre les équation suivant. Écris les étapes nécessaires en couleurs. Simplifier le résultat si possible.. A) 6 x=13 B) -5 x=9 C) -8 x =-23 D) x ÷ 7=2 E) 4x+5=27 F) 7x-13=-18 G) 7-3x=15 H) 7x-2=6+5x I) 7(2x-1)=-5x J) 4(x+3)=5-(x-3) K) -3 ÷x = 6÷-5
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x = 13/6
B) -5 x=9
x = 9/-5
x = -9/5
C) -8 x =-23
x = -23/-8
x =23/8
D) x ÷ 7=2
x/7 =2
x = 2*7
x = 14
E) 4x+5=27
4x = 27-5
4x =22
x = 22/4
x = 11/2
F) 7x-13=-18
7x = -18 +13
7x = -5
x = -5/7
G) 7-3x=15
-3x =15-7
-3x = 8
x = 8/-3
x = -8/3
H) 7x-2=6+5x
7x -5x = 6 +2
12x = 8
x = 8/12
x = 2/3
I) 7(2x-1)= -5x
14x -7 = -5x
14x +5x = 7
19x = 7
x = 7/19
J) 4(x+3)=5-(x-3)
4x +12 = 5 -x +3
4x +x = 5+3 -12
5x = -4
x = -4/5
K) -3 ÷x = 6÷-5
-3/x = 6/5
-3*5 = 6*x
-15 = 6x
6x = -15
x = -15/6
x = -5/2