the equation a=1/2bh gives the area a of a triangle, where b is the length of the base and h is the height solve this equation for h

Solve the equation for h means that we want to obtain only one h on the LHS (or RHS) but it has to be "alone"
We are starting with
            /*2
We can multiply both sides by 2 to reduce 1/2
    
Now we can divide both sides by b to takes b to the LHS, so
- its our result

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