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8 X 8 + 478.5 +10-2+4.8-10t​

Răspuns :

8*8+478.5+10-2+4.8-10=

16+478.5+10-2+4.8-10=

494.5+10-2+4.8-10=

504.5-2+4.8-10=

502.5+4.8-10=

507.3-10=

=497.3