Répondre :
Bonjour;
1. R=2(x+1)+3(x+4)
= 2x+2 +3x+12
= 5x+14
2. S=5(3x+2)+4(2x-1)
= 15x +10 +8x-4
= 23x +6
3. T= -3(4x-2)-6(x+3)
= -12x +6 -6x -18
= -18x -12
4. U=-7(-2x-1)-5(-x-1)
= 14x +7 +5x +5
= 19x +12
Bonjour;
1. R=2(x+1)+3(x+4)
= 2x+2 +3x+12
= 5x+14
2. S=5(3x+2)+4(2x-1)
= 15x +10 +8x-4
= 23x +6
3. T= -3(4x-2)-6(x+3)
= -12x +6 -6x -18
= -18x -12
4. U=-7(-2x-1)-5(-x-1)
= 14x +7 +5x +5
= 19x +12