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Indică ordinea efectuării operațiilor:a)(420×5+31)-20×25;; b) 1950-(27×25+40:4);; c)39×400+[23+2×(23-2×3)];;; d)[(470×50-2×190)+70:10×19]-52;;;;;; va rog

Răspuns :

Renatemambouko
a)(420×5+31)-20×25=2100+31-500=1631

b) 1950-(27×25+40:4)=1950-(675+10)=1950-685=1265

c)39×400+[23+2×(23-2×3)]=15600+(23+2×17)=15600+57=15657


d)[(470×50-2×190)+70:10×19]-52=
=[(23500-380)+7×19]-52=
=(23120+133)-52=
=23253-52=23201

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