Question

repede dau coroana la cei care rezolva problema ps. #trebuie sa screti cum ati facuto​ doar (a)

Answer 1

Răspuns:

a)1268-[(412×8-1236:6):x]×4=444

(412×8-1236:6):x parantaza mare o notăm A

1268-A×4=444

A×4=1268-444

A×4=824

A=824:4=206 revenim la a)

A=>(412×8-1236:6):x=824

412×8-1236:6=824×x

3296-206=824×x /:206

15-1=4×x

14=4×x

x=7/2

b)[80(x:40-20)5:100+992]:100=10

80(x:40-20)5:100+992=1000

80(x:40-20)5:100=8

80(x:40-20)5=800 /:80

x:40-20=10:5

x:40=2+20

x=22×40=880