Question

considerando que x-y+z=120 determine x y z na proporçao a/2=y/5=z/6

Answer 1

x - y + z =  120
x /2  = y/5 = z/6
( x - y + z) ( 2 - 5 + 6) =  x/2 = y/5 = z/6
120/3 = 40/1  = x/2 = y/5 = z/6
x/2 = 40/1
x = 40 * 2 = 80 ****
y/5 = 40/1
y = 40 * 5 = 200 ***
z/6 = 40/1
z = 6 * 40 = 240 ***
PROVA
80 - 200 + 240 = 120 ****