Solve for a
a=-21
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3a-20=4a+1
Multiply both sides of the equation by 12, the least common multiple of 4,3,12.
3a-20-4a=1
Subtract 4a from both sides.
-a-20=1
Combine 3a and -4a to get -a.
-a=1+20
Add 20 to both sides.
-a=21
Add 1 and 20 to get 21.
a=-21
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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