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a fost răspuns

Efectueaza urmatoarele exercitii: 98+8×[1004-4×(8:2×2-4:4×2)] ;[1+2×(6+6:3)-5]:6 ;1000-[409×(6:3)+56:8×5] ; [(35:7+21:7)×7+(3+9:3+27)]×7.

Răspuns :

Selena55
=98+8x(1004-4+6)=98+8x1006=98+8048=8146

=(1+2x8-5):6=12:6=2

=1000-(409x2+35)=1000-453=547

=(5+3)x7+(3+3+27)x7=56+33x7=287
98+8×[1004-4×(4×2-1×2)]=98+8×[1004-4×(8-2)]=98+8×(1004-4×6)=98+8×(1004-24)=98+8×980=98+7840=7938

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