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dacă a=20+(100-8×8-4×2)
b=50-(65-3×6+1)
c=2+27:9+21:7-2×1

a) a:(b+c. b) 2×a+2×b-4×c. c)2×a:(b+c)+a.​


Răspuns :

Răspuns:

a=8

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Explicație pas cu pas:

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Răspuns:

a=20+(100-8*8-4*2)

a=20+(100-64-8)

a=20+(36-8)

a=20+28

a=48

b=50-(65-3*6+1)

b=50-(65-18+1)

b=50-(47+1)

b=50-48

b=2

c=2+27:9+21:7-2*1

c=2+3+3-2

c=5+3-2

c=8-2

c=6

a) a:(b+c)=

48:(2+6)=

48:8=

6

b) 2*a+2*b-4*c=

2*48+2*2-4*6=

99+4-24=

103-24=

79