Question

Aflati x din proportiile: a) 2 supra 5 + 3 supra 4 totul supra 2x = 10 supra 23

Answer 1

(2/5+3/4)/2X = 10/23
[(2×4)+(3×5)/20]/2X = 10/23
[(8+15)/20]/2X = 10/23
23/20×2X = 10/23
23 × 2X× 23 = 10×20
529× 2X = 200
2X = 529:200
2X = 2,645
X= 2,645:2
X = 1,3225