Question

( -5/4 . x + 2,15 ) . [ 17/7 - ( -1/2 . x ) ] = 0

Answer 1

Ta có: ( -5/4 . x + 2,15 ) . [ 17/7 - ( -1/2 . x ) ] = 0

<=> ( -5/4 . x + 2,15 )  = 0

       [ 17/7 - ( -1/2 . x ) ] = 0

<=> -5/4.x = -2,15

        -1/2.x = 17/7

<=> x = -2,15 : (-5/4)

       x = 17/7 : (-1/2)

<=> x = 43/25

       x = -34/7

Answer 2

=0 nha bn

Answer 3

Ta có:( -5/4 . x + 2,15 ) . [ 17/7 - ( -1/2 . x ) ] = 0

=> (  -5/4 . x + 2,15)=0 và [ 17/7 - ( -1/2 . x ) ] = 0

=> -5/4.x=-2,25

x=43/25

 [ 17/7 - ( -1/2 . x ) ] = 0

=> -1/2.x=17/7

x=-34/7

Answer 4

Ta có:( -5/4 . x + 2,15 ) . [ 17/7 - ( -1/2 . x ) ] = 0

=> (  -5/4 . x + 2,15)=0 và [ 17/7 - ( -1/2 . x ) ] = 0

=> -5/4.x=-2,25

x=43/25

 [ 17/7 - ( -1/2 . x ) ] = 0

=> -1/2.x=17/7

x=-34/7

Answer 5

x = 34/7

Answer 6

đáp số:x=34/7

ủng hộ nha