Question
On considere l'equation (E) :
1/3 x - 7 = 2x + 4/3 (quatre tiers)
1) Resoudre cette equation
2) multiplier chaque membre de l'equation par 3
3) Resoudre l'equation obtenue
1/3 x - 7 = 2x + 4/3 (quatre tiers)
1) Resoudre cette equation
2) multiplier chaque membre de l'equation par 3
3) Resoudre l'equation obtenue
Asked by: USER5659
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226 Answers
Answer (226)
Salut;
1) 1/3 x-7 = 2x+ 4/3 <=> 1/3 x- 2x= 4/3 +7 <=> -(5/3)x=25/3 <=> x=-5
2) 3 x (1/3 x-7) = 3 x (2 x+ 4/3) <=> x-21 = 6x +4
3) On résout l'équation obtenue:
x-21 = 6x +4 <=> x-6x=4+21 <=> -5x= 25 => x= -5
1) 1/3 x-7 = 2x+ 4/3 <=> 1/3 x- 2x= 4/3 +7 <=> -(5/3)x=25/3 <=> x=-5
2) 3 x (1/3 x-7) = 3 x (2 x+ 4/3) <=> x-21 = 6x +4
3) On résout l'équation obtenue:
x-21 = 6x +4 <=> x-6x=4+21 <=> -5x= 25 => x= -5