Solve for r
r=3.4
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r=-15.35+18.75
Add 18.75 to both sides.
r=3.4
Add -15.35 and 18.75 to get 3.4.
Examples
Quadratic equation
{ x } ^ { 2 } - 4 x - 5 = 0
Trigonometry
4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
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Arithmetic
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Matrix
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Simultaneous equation
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Integration
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Limits
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