Practice solving one-variable equations like 20 - 7x = 6x - 6, where the variable appears on both sides of the equals sign.

Solve linear equations where the variable appears on both sides of the equation and the coefficients are decimals or fractions.

Practice solving equations with parentheses using the distributive property.

Determine the number of solutions of a given system of equations by considering its algebraic solution process.

Practice finding the nth number in a sequence of consecutive numbers based on the sum.