Question

\(\frac{12+x}{43-x}\)=   \(\frac{2}{3}\)

Answer 1

\(\frac{12+x}{43-x}=\frac{2}{3}\)

2 ( 43 - x ) = 3 ( 12 + x ) 

86 - 2x = 36 + 3x

86 - 36 = 3x + 2x

5x = 50

x = 10

Vậy,......

Answer 2

(12 + x) . 3 = (43 - x) . 2

36 + 3x = 86 - 2x

86 - 36 = 3x + 2x

50 = 5x

x = 50 : 5

x = 10

Answer 3

\(\frac{12+x}{43-x}=\frac{2}{3}\)

=> (12 + x)3 = 2(43 - x)

=> 36 + 3x = 86 - 2x

=> 3x + 2x = 86 - 36

=> 5x = 50

=> x = 10

Answer 4

Cảm ơn nha

Answer 5

Ko có j

Có j cứ hỏi mk

Answer 6

=> (12+x).3 = (43-x).2

=>36+3x = 86+2x

=>86-36=3x-2x

=>x=50