Like terms are terms that have the same set of variables and corresponding exponents

Preparing to solve two step linear equations

Maths

In this unit, pupils learn how to rearrange an equation to find a specific value that satisfies the equation. In expressions and formulae, pupils use their understanding of rearrangement to change the subject of a formula.

In the prior unit, pupils saw that an arithmetic sequence can be represented graphically and that this is a linear relationship. Any point on the line satisfies this relationship. In this unit, pupils learn how to find a value that satisfies the relationship when the second value is known, without the aid of the graph.

Solving linear equations

Which equations are represented by this bar model?

For this bar model, there is a solution to the equation $$5x + 15 = 55$$ when $$x =$$ {{}}.

Which of these are equivalent to the equation $$7(x − 1) − 3(x − 1) = 50$$ ?

Which of these is equivalent to the equation $$5(2x+1) − 3(3x − 2) = 50$$ ?

This shape is made out of a rectangle and two rhombuses (one on each end of the rectangle). Which of these is the correct expression for the perimeter of the shape?

The solution to the equation $$x + 16 = 11$$ is $$x$$ = {{}}.

The solution to $$12x =−48$$ is $$x=$$ {{}}.

{{}} terms are terms that have the same set of variables and corresponding exponents.

Which of these is equivalent to $$−4(2x − 5)$$?

This lesson will soon be taken down.

Preparing to solve two step linear equations

Lesson outcome