Solve for x, y, z, a
a=-2
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x+1+1=0
Consider the first equation. Variable x cannot be equal to -1 since division by zero is not defined. Multiply both sides of the equation by \left(x+1\right)^{2}, the least common multiple of x+1,x^{2}+2x+1.
x+2=0
Add 1 and 1 to get 2.
x=-2
Subtract 2 from both sides. Anything subtracted from zero gives its negation.
y=-2
Consider the second equation. Insert the known values of variables into the equation.
z=-2
Consider the third equation. Insert the known values of variables into the equation.
a=-2
Consider the fourth equation. Insert the known values of variables into the equation.
x=-2 y=-2 z=-2 a=-2
The system is now solved.
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Limits
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