Question

rezolvati ecuatia paranteza patrata 9,2ori paranteza rotunda 4,2 -x inchidem paranteza rotunda plus 2,8 inchidem paranteza patrata ori 10 este egal 120
dau coronita

Answer 1

(9.2•4.2-9.2•x+2.8)•10=120
(38.64-9.2x+2.8)•10=120
(38.64-9.2x+2.8)•10=120
(41.44-9.2x)•10=120
41.44•10-9.2x•10=120
414.4-9.2x•10=120
414.4-92x=120
-92x=120-414.4
-92x=-294.4
x= -294.4-92
x= -2944/10:-92
x= -1472/5:-92
x= -1472/5•1/-92
x= - -16/5•1/-92
x= - -16/5•1
x= - -16/5
x= 16/5
x=3.2


Sper ca intelegi..am pus punct nu virgula, la fractie am pus / si unde sunt doua minusuri inseamna ca unul e in fata fractiei! Daca nu intelegi..te ajut! Ceaw!