Répondre :
2x(3x-4)+5=3x(2x-5)-4
6x²-8x+5=6x²-15x-4
6x²-8x+5-6x²+15x+4=0
-8x+15x=-4-5
7x=-9
x=-9/7
6x²-8x+5=6x²-15x-4
6x²-8x+5-6x²+15x+4=0
-8x+15x=-4-5
7x=-9
x=-9/7