Question

Aflati x din proportia :
a) x+1 supra x = 7 supra 6 ;
b) x supra x+2 = 7 supra 9 ;
c) x supra 8 = x+1 supra 9 .

Answer 1

a)x+1/x=7/6   rezulta (x+1)*6=7x   6x+6=7x    -x=-6(-1) x=6  b)x/x+2=7/9    9x=7x+14 2x=14 x=7 c)x/8=x+1/9    9x=8x+8 x=8

Answer 2

a)
6*(x+1)=7*x
6*x +6=7*x
x=6
b)
9*x=7*(x+2)
9*x=7*x+14
2*x=14
x=7
c)
9*x=8*(x+1)
9*x=8*x+8
x+8
Succes!^_^