Solve for x
x=-2
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5x+5+8x=-21
Add 8x to both sides.
13x+5=-21
Combine 5x and 8x to get 13x.
13x=-21-5
Subtract 5 from both sides.
13x=-26
Subtract 5 from -21 to get -26.
x=\frac{-26}{13}
Divide both sides by 13.
x=-2
Divide -26 by 13 to get -2.
Examples
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Matrix
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Simultaneous equation
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Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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