Pouvez vous m'aider a résoudre ces équations svp : a) 2+3x =8 b) 6x+1 = -11 c) 105= -25x+30 d) -8x+7 = -49 e) 2x+5 = 15-3x f)-6x+4 = -1-x g)7m+10 = m-8 h)-12y =

a) 2+3x=8
3x=8-2
x=(8-2)/3
x=2

b) 6x+1=-11
6x=-11-1
x=(-11-1)/6 soit -12/6 = -2

si tu as compris le principe essaye pour les autre sinon mais un commentaire

a) 2+3x =8 
3x = 8 - 2
3x = 6
x = 6/3
x = 2

b) 6x+1 = -11
6x = -11 - 1
6x = -12
x = -12/6
x = -2
 
c) 105= -25x+30 
105 - 30 = -25x
75 = -25x
75/-25 = x
x = -3

d) -8x+7 = -49
-8x = -49 - 7
-8x = -56
x = -56/-8
x = 7

e) 2x+5 = 15-3x
2x + 3x = 15 - 5
5x = 10
x = 10/5
x = 2

f)-6x+4 = -1-x
-6x + x = -1 - 4
-5x = -5
x = -5/-5
x = 1

g)7m+10 = m-8
7m - m = -8 - 10
6m = -18
m = -18/6
m = -3

h)-12y = 4-13y
-12y + 13y = 4
y = 4