Sagot :
Bonjour,
-3(5x-4)-(-7+9x)+5(8x-1)
= -15x+12+7-9x+40x-5
= 16x+14
=-3 (5x-4) - (-7+9x) +5 (8x-1)
=(-15x+12)-(-7+9x)+40x-5
=- 15x+12+7-9x+40x-5
=18x+14
Bonjour,
-3(5x-4)-(-7+9x)+5(8x-1)
= -15x+12+7-9x+40x-5
= 16x+14
=-3 (5x-4) - (-7+9x) +5 (8x-1)
=(-15x+12)-(-7+9x)+40x-5
=- 15x+12+7-9x+40x-5
=18x+14