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(5×5+7×2×5+15÷3)+(3×7-1)+(20-8×2)

Răspuns :


=(25+14*5+5)+20+(20-16)=
=(25+70+5)+20+4=
=100+20+4=
=124

=(5×5+7×2×5+15÷3)+(3×7-1)+(20-8×2)=(25+70+5)+(21-1)+(20-16)
=(25+75)+20+4
=100+24
=124