Solve for y
y=3
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4y+0=12
Multiply 0 and 8 to get 0.
4y=12
Anything plus zero gives itself.
y=\frac{12}{4}
Divide both sides by 4.
y=3
Divide 12 by 4 to get 3.
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 ) }
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Limits
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