Sagot :
Réponse:
7(x+2) = 7*x + 7*2
= 7x +14
3(2x+2)= 3*2x + 3*2
= 6x +6
4(2x-3)= 4*2x - 4*3
= 8x - 12
3(2x-3)= 3*2x - 3*3
= 6x - 9
8+3(2x+9)= 8+3*2x+3*9
= 8+6x+27
= 6x+ 35
Réponse:
1. 7x+14
2.6x+6
3.8x-16
4.2x-3
5.22x+99
Explications étape par étape:
1. 7
1.
[tex]7 \times x + 7 \times 2[/tex]
2.
[tex]3 \times 2x = 6x \\ 3 \times 2 = 6 \\ = 6x + 6[/tex]
3.
[tex]4 \times 2x = 8x \\ 4 \times ( - 4) = - 16 \\ = 8x - 16[/tex]
4.
[tex]3 \times 2x = 6x \\ 3 \times ( - 3) = - 9 \\ = 6x - 9[/tex]
5.