What is the difference between the equation of the first volume of the fifth grade of primary school mathematics published by People's Education Press and the equation of the seventh grade of junior high school published by People's Education Press? There is no difference in essence.

The solution of equations in primary schools is rather confusing, and four operational relationships can be used, such as dividend = divisor × quotient, addend = and-another addend.

Properties of energy equation

Various operational properties and laws can be used.

The comparison system of junior high school equation solution: denominator removal, bracket removal, term transfer, similar term merger, coefficient conversion to 1.

Personal opinion, pure hand.