Question

5 si 6 va rog si costa 80​

Answer 1

12×{110-10×[9×8-9×(15-8)]}

12×[110-10×(9×8-9×7)]

12×[110-10×(72-63)]

12×(110-10×9)

12×(110-90)

12×20

=240

7stilouri.....6pixuri....235lei

2stilouri.....3pixuri.....80lei|×2(inmultim ×2 pentru a egala) (se inmulteste toata ecuatia)

7stilouri....6pixuri...235lei

4stilouri....6pixuri...160 lei(se face scadere)

-------------------------------------

3stilouri....\pixuri...75lei

3stilouri=75 lei

1 stilou=25 lei

2 stilouri...25×2=50 lei

3 pixuri....80-50=30 lei

1 pix....30:3

1 pix=10 lei

Sper ca te am ajutat!:)

Bafta!!