Question

Calculati:
{[20+(28*6-140):2 la puterea 2 ]*5+375:5 la puterea 2}:[213*2 la puterea 2-(2 la puterea 5:4 la puterea 2+2 la puterea 3)*80-2]

Answer 1

{[20+(28×6-140):2²]×5+375:5²}:[213×2²-(2 la puterea 5 :4 ²+2³)×80-2]=
{[20+(168-140):4]×5+375:25}:[213×4-(32:16+8)×80-2]=
[20+(28:4)×5+15]:[852-(2+8)×80-2]
(20+7×5+15):(852-10×80-2)=
(20+35+15):(852-800-2)=
70:50=
1.4

Answer 2

{[20+(28x6-140):2²]x5+375:5²}:[213x2²-(2⁵:4²+2³)x80-2]=
{[20+(168-140):4]x5+375:25}:[852-(2⁵:(2²)²+2³)x80-2]=
{[20+28:4]x5+15}:[852-(2⁵:2⁴+2³)x80-2]=
{[20+7]x5+15}:[852-(2⁵⁻⁴+2³)x80-2]=
{27x5+15}:[852-(2+8)x80-2]=
{135+15}:[852-10x80-2]=
{135+15}:[852-10x80-2]=
150:[852-800-2]=
150:50=3