Je donne 14points 1) développer: H= (4x+2)(-3+5) 2) calcule: 6(x-4) - (3x-3) 3) Résoudre l'équation: 7x+35=4x-7

[tex]1)\ Developper\ :\\H= (4x+2)(-3+5) \\H=-12x+20x-6+10\\\boxed{H=8x+4}\\ \\ \\ Developper\ :\\A=6(x-4) - (3x-3) \\A=6x-24-3x+3\\\boxed{A=3x-21}\\ \\ \\Resoudre\ :\\ 7x+35=4x-7 \\7x-4x=-7-35\\3x=-42\\\boxed{x=-14}[/tex]

H = (4x +2)(-3 + 5 )
-12x +20x -6 +10
+8x +4

6(x-4) - (3x -3)
6x -24 -3x +3
+3x -21

7x +35 = 4x -7
7x -4x = -35 -7
3x = -42
x = -42/3 
x = -14