Solve for d
d\geq -40
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12+d\geq -28
Multiply both sides of the equation by 4. Since 4 is positive, the inequality direction remains the same.
d\geq -28-12
Subtract 12 from both sides.
d\geq -40
Subtract 12 from -28 to get -40.
Examples
Quadratic equation
{ x } ^ { 2 } - 4 x - 5 = 0
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4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
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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 ) }
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Limits
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