Solve for x
x=\frac{a_{2019}-3}{26}
Solve for a_2019
a_{2019}=26x+3
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26x+3=a_{2019}
Swap sides so that all variable terms are on the left hand side.
26x=a_{2019}-3
Subtract 3 from both sides.
\frac{26x}{26}=\frac{a_{2019}-3}{26}
Divide both sides by 26.
x=\frac{a_{2019}-3}{26}
Dividing by 26 undoes the multiplication by 26.
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