Question

Vă rog frumos dau coroana ​

Answer 1

Răspuns:

8.

6+228-69-(88-5x):3=52

165-(88-5x):3=52

(88-5x):3=113

88-5x=339

-5x=251 =>x=(-50,2)

9.

180:a+460-25=94

180:a=94-435

180:a=(-341)

a=(-180/341)

10.

22500-(3a+100)•19=3500

(3a+100)•19=19000

3a+100=1000

3a=900

a=300

11.

42-20:[4-4:(8-3a)]+56=88

20:[4-4:(8-3a)+56]=(-10)

20:[60-4:(8-3a)]=(-10)

60-4:(8-3a)=(-2)

4:(8-3a)=62

8-3a=2:31

8-3a= Nu mai continui, nu pot să rezolv ceva scris greșit...

12.

(3a+8):4-4=4

(3a+8):4=8

3a+8=32

3a=24

a=8

13.

24:12+(15a-70)•20=402

(15a-70)•20=390

15a-70=18,5

15a=88,5

a=88,5:15=15,7:3=5,2(3)

14.

10000:[100-(100-2a)]+1=10

10000:(100-100+2a)=9

10000:2a=9

a=10000/18=5000/9=555,(5)

Dar, nu sunt corect scrise!