Équation a résoudre sil vous plait: a) -2(x-5)=53(2-4x) b)2(x-5)-3(x-4)=0 c)3(x-2)=7x-(x+1) d)5(x-)-(2x-1)=3-x e)8(x+4)-3(x+2)=3(x-1)-(x-7)

Bonjour,

a) -2(x-5)=53(2-4x)

-2x + 10 = 106 - 212x

212x - 2x = 106 - 10

210x = 96

x = 96/210

x = 16/35

b)2(x-5)-3(x-4)=0

2x - 10 - 3x + 12 = 0

-x + 2 = 0

x = 2

c)3(x-2)=7x-(x+1)

3x - 6 = 7x - x - 1

-6 + 1 = 6x - 3x

3x = -5

x = -5/3

d)5(x-?)-(2x-1)=3-x (je remplace ? Par 1)

5x - 5 - 2x + 1 = 3 - x

3x + x = 3 + 4

4x = 7

x = 7/4

e)8(x+4)-3(x+2)=3(x-1)-(x-7)

8x + 32 - 3x - 6 = 3x - 3 - x + 7

5x + 26 = 2x + 4

5x - 2x = 4 - 26

3x = -22

x = -22/3