The letter "x" is often used in algebra to mean a value that is not yet known. It is called a "variable" or sometimes an "unknown". In x + 2 = 7, x is a variable, but we can work out its value if we try! A variable doesn't have to be "x", it could be "y", "w" or any letter, name or symbol.
Hi there! The answer is 0 solutions.

First we need to work out the parenthesis (for instance possible by using rainbow technique).

Now subtract 12.

Now we can see that the right side of the equation is always 8 smaller than the left side of the equation. Because the right is always smaller, this equation cannot be solved. Therefore there are no solutions to this equation. The answer is 0 solutions.
K = s + 4
k + s = 26
s + 4 = 26
Subtract 4 from both sides of the equation.
s = 22
Steve ran 22 miles.
Mi hermano ha ganado un dinero <em>devengado</em> de 8835 pesos en 15 días.
En esta pregunta debemos determinar el dinero <em>devengado</em> por un período de 15 días a partir de una tasa diaria <em>constante</em>. Esa cantidad es igual al producto de la tasa diaria <em>constante</em>, en pesos por día, y el número de días <em>trabajados</em>, en días:


Mi hermano ha ganado un dinero <em>devengado</em> de 8835 pesos en 15 días.
Para aprender más sobre álgebra y aritmética, invitamos cordialmente a ver esta pregunta: brainly.com/question/953809
It should be about 22.55.