Question

ajutor nu le stiu pe astea

Answer 1

1)
{ [ ( a : 4 ) + 8 ] : 2 - 5 } × 2 = 18
[ ( a : 4 ) + 8 ] : 2 - 5 = 18 : 2
[ ( a : 4 ) + 8 ] : 2 - 5 = 9
[ ( a : 4 ) + 8 ] : 2 = 9 + 5
[ ( a : 4 ) + 8 ] : 2 = 14
( a : 4 ) + 8 = 14 × 2
( a : 4 ) + 8 = 28
a : 4 = 28 - 8
a : 4 = 20
a = 20 × 4
a = 80


2)
( b × 5 + 42 ) : 7 - 11 = 200
( b × 5 + 42 ) : 7 = 200 + 11
( b × 5 + 42 ) : 7 = 211
b × 5 + 42 = 211 × 7
b × 5 + 42 = 1 477
b × 5 = 1 477 - 42
b × 5 = 1 435
b = 1 435 : 5
b = 287



3)
[ ( c + 27 ) : 4 + 6 ] : 7 - 7 = 1
[ ( c + 27 ) : 4 + 6 ] : 7 = 1 + 7
[ ( c + 27 ) : 4 + 6 ] : 7 = 8
( c + 27 ) : 4 + 6 = 8 × 7
( c + 27 ) : 4 + 6 = 56
( c + 27 ) : 4 = 56 - 6
( c + 27 ) : 4 = 50
c + 27 = 50 × 4
c + 27 = 200
c = 200 - 27
c = 173



4)
[ ( d : 4 + 8 ) : 2 - 5 ] × 2 = 18
( d : 4 + 8 ) : 2 - 5 = 18 : 2
( d : 4 + 8 ) : 2 - 5 = 9
( d : 4 + 8 ) : 2 = 9 + 5
( d : 4 + 8 ) : 2 = 14
d : 4 + 8 = 14 × 2
d : 4 + 8 = 28
d : 4 = 28 - 8
d : 4 = 20
d = 20 × 4
d = 80

Answer 2

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