Solve for b
b=\frac{x}{2}
Solve for x
x=2b
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x=0+2b
Combine b and b to get 2b.
x=2b
Anything plus zero gives itself.
2b=x
Swap sides so that all variable terms are on the left hand side.
\frac{2b}{2}=\frac{x}{2}
Divide both sides by 2.
b=\frac{x}{2}
Dividing by 2 undoes the multiplication by 2.
x=0+2b
Combine b and b to get 2b.
x=2b
Anything plus zero gives itself.
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Matrix
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Limits
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