Question

1) [84+60×100:(7×2+3×2)-14]:[(40-5×8)+(65-4×7)]=10

2)[624:2+(3875-1375):25]+(5040-1350):3=1642

3)4750:[16+23×3-(34:2+123:3)+10×5-8×9]-123=827

4)17800-[130:5+24:6+6×(380-180)×9]=6970

Answer 1

Asa ajungi la rezultate:
1. = (84+60 x 100 : 20 - 14 ) : 37
= ( 84 + 6000 : 20 - 14 ) : 37
= ( 84 + 300 - 14 ) : 37
= 370 : 37
= 10
2. = ( 624 : 2 + 2500 : 25 ) + 3690 : 3
= ( 312 + 100 ) + 1230
= 412 + 1230
= 1642
3. = 4750 : [ 16 + 23 x 3 - ( 17 + 41 ) + 10 x 5 - 8 x 9 ] - 123
= 4750 : ( 16 + 23 x 3 - 58 + 10 x 5 - 8 x 9 ) -123
= 4750 : ( 16 + 69 - 58 + 50 - 72 ) - 123
= 4750 : 5 - 123
= 827
4. = 17800 - ( 130 : 5 + 24 : 6 + 6 x 200 x 9 )
= 17800 - ( 26 + 4 + 1200 x 9 )
= 17800 - ( 26 + 4 + 10800 )
= 17800 - 10830
= 6970