Répondre :
(-7+a)x(-4)+6(11-a)+5a
=28-4a+66-6a+5a
=-5a+94
-2(4b-5)-(2+3b)+3(4b-1)
=-8b+10-2-3b+12b-3
=-b+5
=28-4a+66-6a+5a
=-5a+94
-2(4b-5)-(2+3b)+3(4b-1)
=-8b+10-2-3b+12b-3
=-b+5
(-7+a)x(-4)+6(11-a)+5a=28-4a+66-6a+5a
-4a-6a+5a+28+66
-5a+94
-2(4b-5)-(2+3b)+3(4b-1)=-8b+10-2-3b+12b-3
-8b-3b+12b+10-2-3
1b+5
-4a-6a+5a+28+66
-5a+94
-2(4b-5)-(2+3b)+3(4b-1)=-8b+10-2-3b+12b-3
-8b-3b+12b+10-2-3
1b+5