Question

Calculează : 2×10+10×{30+2×102÷[ 70 - 48×10÷(9×10-40÷4)]}. Urgent!!! Vă rog!!!

Answer 1

2 x 10 + 10 x [ 30 + 2 x 102 : [ 70 - 48 x 10 : (90-10)]}
2 x 10 + 10 x [ 30 + 2 x 102 : [ 70 - 48 x 10 : 80 ] 
2 x 10 + 10 x [ 30 + 2 x 102 : [ 70 - 6 ] 
2 x 10 + 10 x [ 30 + 2 x 102 : 64 ] 
2 x 10 + 10 x [ 30 + 3.1875 ] 
   20 + 10 x 33.1875
 20 + 331.875 = 351.875?
(Poate ai o greseala in enunt)

Answer 2

2×10+10×{30+2×102÷[ 70 - 48×10÷(9×10-40÷4)]}=2×10+10×{30+2×102÷[ 70 - 48×10÷(90-10)]}=2×10+10×[30+2×102÷( 70 - 48×10÷80)]=
=2×10+10×[30+2×102÷(70-6)]=  20+10x(30+204:64)=20+10x(30+51/16)=
= 20+10x531/16= 20+2655/8= 2815/8