\left\{ \begin{array} { l } { 2 b + 3 = - 1 } \\ { \frac { a + 1 } { 2 } = 1 } \end{array} \right.
Solve for b, a
b=-2
a=1
Quiz
\left\{ \begin{array} { l } { 2 b + 3 = - 1 } \\ { \frac { a + 1 } { 2 } = 1 } \end{array} \right.
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2b=-1-3
Consider the first equation. Subtract 3 from both sides.
2b=-4
Subtract 3 from -1 to get -4.
b=\frac{-4}{2}
Divide both sides by 2.
b=-2
Divide -4 by 2 to get -2.
a+1=2
Consider the second equation. Multiply both sides by 2.
a=2-1
Subtract 1 from both sides.
a=1
Subtract 1 from 2 to get 1.
b=-2 a=1
The system is now solved.
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