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Résoudre les équations suivantes : a) 4x + 22 = 34
b) 23m+ 14 = 7m-2
c) 9x = 3(x-8)
d) 3(2t+5) = 4(5t + 7)
e) 2(3x+4)-5(1-2x) = 7(2x - 3) +12
f)
2x+1 x x-5
______ - ___ = _____
2 3 6
Résoudre les équations suivantes : a) 4x + 22 = 34
b) 23m+ 14 = 7m-2
c) 9x = 3(x-8)
d) 3(2t+5) = 4(5t + 7)
e) 2(3x+4)-5(1-2x) = 7(2x - 3) +12
f)
2x+1 x x-5
______ - ___ = _____
2 3 6
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4x=34-22
4x=12
x=12/4
x=3
b. 23m+14=7m-2
23m-7m= -2-14
16m=-16
m=-1
c) 9x=3x-24
9x-3x=-24
6x=-24
x=-24/6
x=-4
d) 6t+15=20t+28
-20t+6t=28-15
-14t=13
t=13/-14
e)6x+8-(5-10x)=14x-21+12
6x+8-5+10x=14x-9
16x+3=14x-9
2x=-9-3
2x=-12
x=-12/2
x=-6
f). (6x+3)/6. - 2x/6. = (x-5)/6
6x+3 - 2x =. x-5
4x-x=-5-3
3x=-8
x=-8/3
Voilà j’espere que tu as compris :) bon courage