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Răspuns :

Răspuns:

(x:5+6)·3+4=25

(x:5+6)·3=25-4

(x:5+6)·3=21

(x:5+6)=21:3

(x:5+6)=7

x:5=7-6

x:5=1

x=5·1

x=5

10+10·(x-10)=20·10

10+10·(x-10)=200

10+(x-10)=200:10

10+(x-10)=10

x-10=10-10

x-10=0

x=10+0

x=10

Sper ca te-am ajutat <3

Răspuns:

a.

(x:5+6)•3=25-4

(x:5+6)•3=21

(x:5+6)=21:3

x:5+6=7

x:5=7-6

x:5=1

x=5•1

x=5

b.

10+10•(x-10)=20•10

10+10•(x-10)=200

10•(x-10)=200-10

10•(x-10)=190

(x-10)=190:10

x-10=19

x=19-10

x=9