Răspuns :
x-cantitatea dintr-o lada
in a8a lada- 7x-28
in a9a lada x+8
7x+7x-28+x+8=1 000
15x-20=1000
15x=1 020
x=68
in a8a= 476-28=448
in a9a=68+8=76
in a8a lada- 7x-28
in a9a lada x+8
7x+7x-28+x+8=1 000
15x-20=1000
15x=1 020
x=68
in a8a= 476-28=448
in a9a=68+8=76
x-cantitatea dintr-o lada
in a8a lada- 7x-28
in a9a lada x+8
7x+7x-28+x+8=1 000
15x-20=1000
15x=1 020
x=68
in a8a= 476-28=448
in a9a=68+8=76
in a8a lada- 7x-28
in a9a lada x+8
7x+7x-28+x+8=1 000
15x-20=1000
15x=1 020
x=68
in a8a= 476-28=448
in a9a=68+8=76