\left\{ \begin{array} { l } { 7 + y = 5 k + 1 } \\ { 2 k - 5 = - 7 } \end{array} \right.
Solve for y, k
y=-11
k=-1
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2k=-7+5
Consider the second equation. Add 5 to both sides.
2k=-2
Add -7 and 5 to get -2.
k=\frac{-2}{2}
Divide both sides by 2.
k=-1
Divide -2 by 2 to get -1.
7+y=5\left(-1\right)+1
Consider the first equation. Insert the known values of variables into the equation.
7+y=-5+1
Multiply 5 and -1 to get -5.
7+y=-4
Add -5 and 1 to get -4.
y=-4-7
Subtract 7 from both sides.
y=-11
Subtract 7 from -4 to get -11.
y=-11 k=-1
The system is now solved.
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