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!!
