Question

TOT Va rooooggggggg coroana + 100 punct​

Answer 1

Ex 2

[(a•2-160)•3-900]•2-600=900

[(a•2-160)•3-900]•2=900+600

[(a•2-160)•3-900]•2=1500

(a•2-160)•3-900=1500:2

(a•2-160)•3-900=750

(a•2-160)•3=750+900=

(a•2-160)•3=1650

a•2-160=1650:3=

a•2-160=550

a•2=550+160=

a•2=710

a=710:2

a=355

Proba: [(355•2-160)•3-900]•2-600=

=[(710-160)•3-900]•2-600=

=(550•3-900)•2-600=

=(1650-900)•2-600=

=750•2-600=

=1500-600=

=900 lei

Este corect!!!