Question

Tìm x

b. 5,67 x x x ( 10 + 5 ) = 5,67 x 5 x 3 x7

Answer 1

`5,67x .( 10 + 5 ) = 5,67 . 5 . 3 . 7`

`=> 5,67x . 15 = 5,67 . 15 .7`

`=> 5,67x = 5,67 . 7 . 15 : 15`

`=> 5,67x = 5,67 . 7 . 1`

`=> 5,67x = 5,67 . 7`

`=> x = 7 . 5,67:5,67`

`=> x = 7 . 1`

`=> x = 7`

Answer 2

\(b,5,67\times x\times\left(10+5\right)=5,67\times5\times3\times7\\ 5,67\times x\times15=5,67\times15\times7\\ x=7\\ Vậyx=7\)

Answer 3

ntn a ? 

`5,67x xx x ( 10 + 5 ) = 5,67 xx 5 xx 3 xx 7`