Question

[42-(9xa-13):2]x3-184:4:2=55

Answer 1

Răspuns

5

Explicație pas cu pas:

[42-(9xa-13):2]x3-184:4:2=55

[42-(9xa-13):2]x3 -46:2=55

[42-(9xa-13):2]x3 -23 = 55

[42-(9xa-13):2]x3 =  55+23

[42-(9xa-13):2]x3= 78

42-(9xa-13):2= 78:3

42-(9xa-13):2 = 26

(9xa-13):2=42-26

(9xa-13):2=16

9xa-13=16x2

9xa-13=32

9xa =32+13

9xa= 45

a=45:9

a=5

Answer 2

[ 42 - ( 9 × a - 13 ) : 2 ] × 3 - 184 : 4 : 2 = 55

[ 42 - ( 9 × a - 13 ) : 2 ] × 3 - 46 : 2 = 55

[ 42 - ( 9 × a - 13 ) : 2 ] × 3 - 23 = 55

[ 42 - ( 9 × a - 13 ) : 2 ] × 3 = 55 + 23

[ 42 - ( 9 × a - 13 ) : 2 ] × 3 = 78

[ 42 - ( 9 × a - 13 ) : 2 ] = 78 : 3

[ 42 - ( 9 × a - 13 ) : 2 ] = 26

[ ( 9 × a - 13 ) : 2 ] = 42 - 26

[ ( 9 × a - 13 ) : 2 ] = 16

9 × a - 13 = 16 × 2

9 × a - 13 = 32

9 × a = 32 + 13

9 × a = 45

a = 45 : 9

a = 5