Need to Know

Algebra

The rules you must have ready for the exam.

How to use this: say each rule in your head, then tap Show me to check.

Algebraic fractions

1 rule

Rule 01

Add / subtract

Use a common denominator, expand the tops, then simplify. Watch the minus sign.

1 rule

Rule 02

Rearranging

Multiply out → gather the wanted letter on one side → factor it out → divide.

1 rule

Rule 03

Solve & flip

Solve like an equation, but flip the sign when multiplying/dividing by a negative. List solutions in the given set.

Mathslive.ie · Algebra · Need to Know