Question

Tìm x

0,75 × x + 3/4 × x + x = 30

Answer 1

= 3/4 x y + 3/4 x y + y = 30
=y x( 3/4 + 3/4 + 1 ) = 30
y x 2,5 = 30
y = 30 : 2, 5
y = 12

chúc bn hok tốt @_@

Answer 2

= 3/4 x y + 3/4 x y + y = 30
=y x( 3/4 + 3/4 + 1 ) = 30
y x 2,5 = 30
y = 30 : 2, 5
y = 12

k cho mk nha

Answer 3

\(0,75x+\frac{3}{4}x+x=30\)

\(\left(\frac{3}{4}+\frac{3}{4}+1\right)x=30\)

\(2,5x=30\)

\(x=12\)

vậy \(x=12\)

Answer 4

\(\frac{3}{4}x+\frac{3}{4}x+x=30\)

\(2,5x=30\)

\(x=12\)

vậy \(x=12\)

học vui Chu Thị Hồng Vân