Solve for k
k=-6
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2\left(-k-3\right)=2\times 3
Multiply both sides by 3.
-k-3=3
Cancel out 2 on both sides.
-k=3+3
Add 3 to both sides.
-k=6
Add 3 and 3 to get 6.
k=-6
Multiply both sides by -1.
Examples
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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.
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
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