Question

[(27xa-79)x65-78]x25+350=1650

PRIN METODA MERSULUI INVERS​​

Answer 1

Răspuns:

1650-350=1300

1300:25=52

52+78=130

130:65=2

2+79=81

81:27=3

a=3

Explicație pas cu pas:

Proba:

[(27×3-79)×65-78]×25+350=

=[(81-79)×65-78]×25+350=

=(2×65-78)×25+350=

=52×25+350=

=1300+350=

=1650