Bonjour ...
1/ (4x+3)+(-2x+5)
= 4x+3-2x+5
= 4x-2x + 3 + 5
= 2x + 8
2/ 2(-5x+2)
2*(-5x) + 2*2
-10x + 4
------
Pour l'équation
3x = 7x-5
3x ( -7x) = 7x - 5 (-7x)
-4x = -5
-4x (/-4) = -5 (/-4)
x = 5/4
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Bonjour ...
1/ (4x+3)+(-2x+5)
= 4x+3-2x+5
= 4x-2x + 3 + 5
= 2x + 8
2/ 2(-5x+2)
2*(-5x) + 2*2
-10x + 4
------
Pour l'équation
3x = 7x-5
3x ( -7x) = 7x - 5 (-7x)
-4x = -5
-4x (/-4) = -5 (/-4)
x = 5/4