Question

ajutor pls dau coroană​

Answer 1

Răspuns:

Explicație pas cu pas:

25-{27:[(36-27:3):3]+42:7*3}=

25-{27:[(36-9):3]+42:7*3}=

25-[27:(27:3)+42:7*3]=

25-(27:9+42:7*3)=

25-(3+6*3)=

25-(3+18)=

25-21=4

x-57-83=1000

x-57=1083

x=1083+57

x=1140

315:3=105 cutii

a=?

1/5 din 840

1/5*840=168

a=168

Metoda figurative

a /__/

b /__/__/__/__/    total=125kg

125:5=25 kg stiuca

25x4=100kg crap

sau metoda aritmetica

a+b=125

a=4b

4b+b=125

5b=125

b=25

a=4x25

a=100