Resposta :
x - y = 15
x - 9/10 = 15
x = 15 + 9/10
x = (150 + 9) / 10
x = 159 / 10
ou x = 15,9
Fl'
x - 9/10 = 15
x = 15 + 9/10
x = (150 + 9) / 10
x = 159 / 10
ou x = 15,9
Fl'
[tex]x-\frac{9x}{10}=15\\\frac{10x-9x}{10}=15\\\frac{x}{10}=15\\x=10*15\\\\x=150[/tex]