Solve for x, y
x=2
y=-3
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2+y+1=0
Consider the second equation. Insert the known values of variables into the equation.
3+y=0
Add 2 and 1 to get 3.
y=-3
Subtract 3 from both sides. Anything subtracted from zero gives its negation.
x=2 y=-3
The system is now solved.
Examples
Quadratic equation
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Linear equation
y = 3x + 4
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Matrix
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Simultaneous equation
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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