Résoudre chaque équations. a) 5 (2x - 1) = 3 (2x + 5) b) 7 (2/7x - 5) - 3 (4/3x -8) = -3

a) 5 (2x - 1) = 3 (2x + 5)
10x-5 = 6x+15
10x-6x = 15+5
4x = 20
x = 20/4
x =5

b) 7 (2/7x - 5) - 3 (4/3x -8) = -3
2x-5/7 -4x+24 = -3
-2x = -3 +5/7 -24
-2x = 5/7 -27
-2x =  5/7 -189/7
-2x = -184/7
-2x = -184/7
x = -184/7 x -1/2
x = +92/7