Solve {l}{x-y+1=0}{x=3}

$$\left\{ \begin{array} { l } { x - y + 1 = 0 } \\ { x = 3 } \end{array} \right.$$

Solve for x, y

$$x=3$$

$$y=4$$

Solution Steps

Consider the first equation. Insert the known values of variables into the equation.

$$3-y+1=0$$

Add 3 and 1 to get 4.

$$4-y=0$$

Subtract 4 from both sides. Anything subtracted from zero gives its negation.

$$-y=-4$$

Divide both sides by -1.

$$y=\frac{-4}{-1}$$

Fraction \frac{-4}{-1} can be simplified to 4 by removing the negative sign from both the numerator and the denominator.

$$y=4$$

The system is now solved.

$$x=3 y=4$$