Answered

Edna is 155 cm. tall. Lilia's height is ten cm. less then twice Edna's height.

Sagot :

Let x be Edna's height which is 155cm Lilia's height is 2x-10cm By substitution 2x-10cm = Lilia's height 2(155cm)-10cm = Lilia's height 310cm-10cm = Lilia's height 300cm = Lilia's height
Briskwarlockviz
let x be Lilia's Height
y be Edna's height.

equation:
x  = 2y - 10

substituting y = 155

x = 2(155) -10
x= 300

300 cm is Lilia's Height.