Bonjour,
Résoudre:
3(x+1)= 8x-12
3x+3= 8x-12
3x-8x= -12-3
-5x= -15
x= -15/-5
x= 3
S= { 3 }.
(x*3+x*5)/15 = -3x+5
8x= 15(-3x+5)
8x= -45x+75
8x+45x= 75
53x= 75
x= 75/35
S= 75/35
S= { 75/35 }.
(-x+1) /6 +x/9- 2/15= 0 DC= 90 puis sera simplifié
15(-x+1) - 2*6+x*10= 0
-15x+15-12+10x= 0
-5x+3= 0
x= 3/5
S= { 3/5 }
3(2x+5)= 2*15+ x*15- 5(x+3) DC= 15
6x+15= 30+15x-5x-15
6x+15= 10x+15
6x-10x= 15-15
-4x= 0
x= 0
S= { 0 }
5x+25+(x+1)/3-5x= 34
25*3+x+1= 3*34
x= 102-75-1
x= 26
S= { 26 }
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Bonjour,
Résoudre:
3(x+1)= 8x-12
3x+3= 8x-12
3x-8x= -12-3
-5x= -15
x= -15/-5
x= 3
S= { 3 }.
(x*3+x*5)/15 = -3x+5
8x= 15(-3x+5)
8x= -45x+75
8x+45x= 75
53x= 75
x= 75/35
S= 75/35
S= { 75/35 }.
(-x+1) /6 +x/9- 2/15= 0 DC= 90 puis sera simplifié
15(-x+1) - 2*6+x*10= 0
-15x+15-12+10x= 0
-5x+3= 0
x= 3/5
S= { 3/5 }
3(2x+5)= 2*15+ x*15- 5(x+3) DC= 15
6x+15= 30+15x-5x-15
6x+15= 10x+15
6x-10x= 15-15
-4x= 0
x= 0
S= { 0 }
5x+25+(x+1)/3-5x= 34
25*3+x+1= 3*34
x= 102-75-1
x= 26
S= { 26 }