Question

Ayuda no entiendo
(5+9)+3+6(4+5)+6+9(4-3)=​

Answer 1

5+9+3+6(4+5)+6+9(4−3)

=14+3+6(4+5)+6+9(4−3)

=17+6(4+5)+6+9(4−3)

=17+(6)(9)+6+9(4−3)

=17+54+6+9(4−3)

=71+6+9(4−3)

=77+9(4−3)

=77+(9)(1)

=77+9

=86