Solve for a
a=\frac{R-16b-c}{16}
Solve for R
R=16a+16b+c
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c+16b+16a=R
Swap sides so that all variable terms are on the left hand side.
16b+16a=R-c
Subtract c from both sides.
16a=R-c-16b
Subtract 16b from both sides.
16a=R-16b-c
The equation is in standard form.
\frac{16a}{16}=\frac{R-16b-c}{16}
Divide both sides by 16.
a=\frac{R-16b-c}{16}
Dividing by 16 undoes the multiplication by 16.
a=\frac{R}{16}-\frac{c}{16}-b
Divide R-c-16b by 16.
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