Question

Va rog sa ma ajutati cu aceste 2 ecuatii :
(10/9 - x) : x= 7/8 : 7/12
(3/4 + x) : x = 27/20 : 9/10
Va multumesc!

Answer 1

(10/9 - x) : x= 7/8 : 7/12 
10/9x - 1= 7/8 × 12/7
10/9x= 3/2+1
10/9x=5/2
45x=20
x=20/45
x=4/9

(3/4 + x) : x = 27/20 : 9/10
3/4x + 1 = 27/20 × 10/9
3/4x  = 3/2-1
3/4x  = 1/2
4x=6
2x=3
x=3/2