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47+58+83-29-17-53
= (47 - 17) + ( 83 - 53 ) + ( 58 - 29 )
= 30 + 30 + 29
= 60 + 29
= 89
597+6795+77+994+4774+47-5000 =7392+1071+4821-5000 =8463+4821-5000 =13284-5000 =8284
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a,186:(9:3)=186:3=62
b,152-29x5=152-145=7
c,224+476:7=224+68=292
d,128x3:8=48
e,(385-85):4=300:4=75
f,208:(4x2)=208:8=26
497 nhé.
994:4x2=497