Question

x/3=y/8=z/5 và 2x+3y-z=50

Answer 1

Step-by-step explanation:

z = 5y/8

x = 3y/8

2x + 3y - z = 50

6y/8 + 3y - 5y/8 = 50

6y/8 + 24y/8 - 5y/8 = 50

25y/8 = 50

25y = 400

y = 16

x = 3y/8 = 3×16/8 = 3×2 = 6

z = 5y/8 = 5×16/8 = 5×2 = 10

Answer 2

x/3＝y/8＝z/5
2x＋3y－z＝50

x/3＝y/8
x/3＝z/5
2x＋3y－z＝50

8x－3y＝0
5x－3z＝0
2x＋3y－z＝50

x＝3/8y
5x－3z＝0
2x＋3y－z＝50

5×3/8y－3z＝0
2×3/8y＋3y－z＝50

15y－24z＝0
－15y＋4z＝－200

－20z＝－200
z＝10

15y－24×10＝0
y＝16

x＝3/8×16
x＝6

(x, y, z)＝(6, 16, 10)

Hope my answer helped u :)