Question

1. aflati nr. necunoscut din urmatoarele expresii matematice :
( 525:5+b ) :5+12=790
(65x502:10-c-63):3=600
[(e:8+5.609):2-111]:10=400
(540:6x9-755):(g-386)=5
2.calculati nr. necunoscut :
b-18179=25582
115303+a+37172=98783
165737-c=563345

343452+214126+n=989783

DAU COROANA

Answer 1

(525:5+b):5+12=790
(105+b):5=790-12
(105+b):5=778
105+b=778*5
105+b=3890
b=3890-105
b=3785

(65*502:10-c-63):3=600
(32630:10-c-63):3=600
(3263-c-63):3=600
3200-c=600*3
3200-c=1800
c=3200-1800
c=1400

(540:6*9-755):(g-386)=5
(90*9-755):(g-386)=5
(810-755):(g-386)=5
55:(g-386)=5
g-386=5*55
g-386=275
g=275+386
g=661

[(e:8+5609):2-111]:10=400
(e:8+5609):2-111=400*10
(e:8+5609):2-111=4000
(e:8+5609):2=4000+111
(e:8-5609):2=4111
e:8+5609=4111*2
e:8+5609=8222
e:8=8222-5609
e:8=2613
e=2613*8
e=20904

b-18179=25582
b=25582+18179
b=43761

115303+a+37172=98783
152475+a=98783
a=152475-98783
a=53692

343452+214126+n=989783
557578+n=989783
n=989783-557578
n=432205

Scuze de intarziere!