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Vă rooog ! Pe toate 3 ! Urgentt!​

Vă Rooog Pe Toate 3 Urgentt class=

Răspuns :

Răspuns:

a)2x+1=1003

2x=1003-1

2x=1002

x=501

Verificare: 2×501+1=1003

1002+1=1003(A)

b)(y-430)×30=210

(y-430)=210:30

(y-430)=7

y=7+430

y=437

c)(777-z)-125=3130

777-z=3130+125

777-z=3255

z=777-3255

z= -2478

Răspuns:

a)2x+1=1003

2x=1003-1

2x=1002

x=1002:2

x=501

Verificare: 2×501+1=1003

1002+1=1003(A)

b)(y-430)×30=210

(y-430)=210:30

(y-430)=7

y=7+430

y=437

c)(777-z)-125=3130

(777-z)=3130+125

(777-z)=3255

z=777-3255

z= -2478