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11×(48-12×3,4)+5×[19+4×(8,3-5,4)]-20,3=
rezolvati (pe etape, nu raspunsul direct)


Răspuns :

11×(48-12×3,4)+5×[19+4×(8,3-5,4)]-20,3=

=11×(48-40,8)+5×(19+4×2,9)-20,3=

=11×7,2+5×(19+11,6)-20,3=

=79,2+5×30,6-20,3=

=79,2+153-20,3=

=232,2-20,3=

=211,9