[(ax9)-78:2]+25x4=1492
=[(ax9)-78:2]+25=1492:4
=(ax9)-78:2=373-25
=(ax9)-78=348x2
=ax9=696+78
a=774:9
a=86
REZULTAT A=86
(In caz ca nu sti : inseamna impartire)
Răspuns:
[(a×9)-78÷2]+25×4=1492 /÷
[(a×9)-78÷2]+25=1492÷4
[(a×9)-78÷2]+25=373 /-
(a×9-78÷2)=348
a×9-78=174 /+
a×9= 252 /÷
a=28
