Question

[210:15×(8×a+6)-164]+17×3=307​

Answer 1

Răspuns:

a = 3

Explicație pas cu pas:

[ 210 : 15 x ( 8 x a + 6 ) - 164 ]+ 17 x 3 = 307

[ 14 x ( 8 x a + 6 ) - 164 ] +17 x 3 = 307

[ 14 x ( 8 x a + 6 ) - 164 ] + 51 = 307

[ 14 x ( 8 x a + 6 ) - 164 ]= 307 - 51

[ 14 x ( 8 x a + 6 ) - 164] = 256

[ 14 x ( 8 x a + 6 )] = 256 + 164

[ 14 x ( 8 x a + 6 ) ] = 420

( 8 x a + 6 ) = 420 : 14

8 x a + 6 = 30

8 x a = 30 - 6

8 x a = 24

a = 24 : 8

a = 3

Answer 2

[ 210 : 15 × ( 8 × a + 6 ) - 164 ] + 17 × 3 = 307

[ 14 × ( 8 × a + 6 ) - 164 ] + 51 = 307

14 × ( 8 × a + 6 ) - 164 = 307 - 51

14 × ( 8 × a + 6 ) - 164 = 256

14 × ( 8 × a + 6 ) = 256 + 164

14 × ( 8 × a + 6 ) = 420

8 × a + 6 = 420 : 14

8 × a + 6 = 30

8 × a = 30 - 6

8 × a = 24

a = 24 : 8

a = 3