Question

a) 90+7×[1614-12000÷8 ) - 16 =
b) 44+8×[280:(37-1480:20:37 )] : 32 -7=
c) (18×8+56):[50×40: (220-2×60)]=

Answer 1

Răspuns:

Explicație pas cu pas:

a)

90 + 7 × [ 1614 - 12 000 : ( 18 - 10) ] - 16 = 872

= 90 + 7 × ( 1614 - 12 000 : 8 ) - 16 =

= 90 + 7 × ( 1614 - 1 500 ) - 16 =

= 90 + 7 × 114 - 16 =

= 90 + 798 - 16 =

= 888 - 16 =

= 872

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b)

44 + 8 × [ 280 : ( 37 - 1480 : 20 : 37 ) ] : 32 - 7 = 39

= 44 + 8 × [ 280 : ( 37 - 74 : 37 ) ] : 32 - 7 =

= 44 + 8 × [ 280 : ( 37 - 2 ) ] : 32 - 7 =

= 44 + 8 × ( 280 : 35 ) : 32 - 7 =

= 44 + 8 × 8 : 32 - 7 =

= 44 + 64 : 32 - 7 =

= 44 + 2 - 7 =

= 46 - 7 =

= 39

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c)

( 18 × 8 + 56 ) : [ 50 × 40 : ( 220 - 2 × 60 ) ] = 10

= ( 144 + 56 ) : [ 2000 : ( 220 - 120 ) ] =

= 200 : ( 2000 : 100 ) =

= 200 : 20 =

= 10