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Rezolvați exercițiile :
1. 123x3:9-2x81:6 =

2. 104:2+(6+36:6)x5 =

3. 45+7x[30-80:(9-5)]-56:7

Nu vreau direct rezultatul, ci metoda,cum se rezolvă pe rând. Ajutor, e urgent! Dau 50 de puncte + coroană.

Răspuns :

1) 123x3:9-2x81:6=
123x3=369
369:9=41
2x81=162
162:6=27
41-27=14
123x3:9-2x81:6=
369:9-162:6=
41-27=14

2)104:2+(6+36:6)x5=
104:2=52
36:6=6
6+6=12
12x5=60
52+60=112
104:2+(6+36:6)x5=
52+(6+6)x5=
52+12x5=
52+60=112

3)45+7x[30-80;(9-5)]-56:7
9-5=4
56:7=8
80:4=20
30-20=10
7x10=70
45+70=115
115-8=107

45+7x[30-80:(9-5)]-56:7=
45+7x(30-80:4)-8=
45+7x(30-20)-8=
45+7x10-8=
45+70-8=
115-8=107

Ti -am facut mai detaliat ca sa sti cum se face
Renatemambouko
1. 123x3:9-2x81:6 =
= 369:9-162:6 =
=41-27=
=14

2. 104:2+(6+36:6)x5 =
=52+(6+6)x5 =
=52+12x5 =
=52+60 =
=112

3. 45+7x[30-80:(9-5)]-56:7=
=45+7x(30-80:4)-8=
=45+7x(30-20)-8=
=45+7x10-8=
=45+70-8=
=115-8=
=107





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