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Solve for a
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ax^{2}+3=bx
Add bx to both sides. Anything plus zero gives itself.
ax^{2}=bx-3
Subtract 3 from both sides.
x^{2}a=bx-3
The equation is in standard form.
\frac{x^{2}a}{x^{2}}=\frac{bx-3}{x^{2}}
Divide both sides by x^{2}.
a=\frac{bx-3}{x^{2}}
Dividing by x^{2} undoes the multiplication by x^{2}.
-bx+3=-ax^{2}
Subtract ax^{2} from both sides. Anything subtracted from zero gives its negation.
-bx=-ax^{2}-3
Subtract 3 from both sides.
\left(-x\right)b=-ax^{2}-3
The equation is in standard form.
\frac{\left(-x\right)b}{-x}=\frac{-ax^{2}-3}{-x}
Divide both sides by -x.
b=\frac{-ax^{2}-3}{-x}
Dividing by -x undoes the multiplication by -x.
b=ax+\frac{3}{x}
Divide -ax^{2}-3 by -x.