Question

[15•(10x-11)-120]•10-125=25

Și

{3•[(4+a)•8]+10}:5=98
URGENT VA ROG !!!
DAU COROANA

Answer 1

Răspuns

[15•(10x-11)-120]•10-125=25

(150x-165-120)•10-125=25

(150x-285)•10-125=25

1500x-2850-125=25

1500x-2975=25

1500X=25+2975

1500x=3000

X=3000÷1500

×=2

{3•[(4+a)•8]+10}÷5=98

[3(32+8a)+10]÷5=98

(96+24a+10)÷5=98

(106+24a)÷5=98

106+24a=98•5

106+24a=490

24a=490-106

24a=384

a=384÷24

a=16

Explicație pas cu pas: