Solve for x
x=-15
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3\times 5=-x
Variable x cannot be equal to 0 since division by zero is not defined. Multiply both sides of the equation by 3x, the least common multiple of x,3.
15=-x
Multiply 3 and 5 to get 15.
-x=15
Swap sides so that all variable terms are on the left hand side.
x=-15
Multiply both sides by -1.
Examples
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Matrix
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Simultaneous equation
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\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
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Limits
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