Below is an instruction that describes a task. Write a response that appropriately completes the request in French. Please answer in French.

### Instruction:
 Sabrina gave 10 cookies to her brother. Her mother gave Sabrina half the number of cookies she gave her brother. Then Sabrina gave two-thirds of her cookies to her sister. If Sabrina had 20 cookies at the start, how many cookies are left with her?


### Response:
 Sabrina avait 20 - 10 = <<20-10=10>>10 cookies restants avant que sa mère ne lui donne 1/2 * 10 = 10/2 = 5 cookies.
Donc, elle avait 10 + 5 = <<10+5=15>>15 cookies à ce moment-là.
Elle a donné 15 x 2/3 = <<15*2/3=10>>10 cookies à sa sœur.
Par conséquent, il ne lui reste que 15 - 10 = <<15-10=5>>5 cookies.