\left\{ \begin{array} { l } { a + 1 = b } \\ { a - 1 = 4 } \end{array} \right.
Solve for a, b
a=5
b=6
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a=4+1
Consider the second equation. Add 1 to both sides.
a=5
Add 4 and 1 to get 5.
5+1=b
Consider the first equation. Insert the known values of variables into the equation.
6=b
Add 5 and 1 to get 6.
b=6
Swap sides so that all variable terms are on the left hand side.
a=5 b=6
The system is now solved.
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