Répondre :
3x+7(x-1)-9
=3x+7x-7-9
=10x-16
1)
8V12+7V75-3V48
=8V4*3+7V25*3-3V16*3
=8*2V3+7*5V3-3*4V3
=16V3+35V3-12V3
=39V3
2)
5V63-8V175+11V252
=5V9*7-8V25*7+11V36*7
=15V7-40V7+66V7
=41V7
=3x+7x-7-9
=10x-16
1)
8V12+7V75-3V48
=8V4*3+7V25*3-3V16*3
=8*2V3+7*5V3-3*4V3
=16V3+35V3-12V3
=39V3
2)
5V63-8V175+11V252
=5V9*7-8V25*7+11V36*7
=15V7-40V7+66V7
=41V7