Question

5(4a+7u)
20a+35u
Are these expressions equivalent? Explain why or why not.

Answer 1

`20a + 35u \to 20a + 35u`

Explanation:

Given

`5(4a+7u)`

`20a+35u`

Required

Determine if they are equivalent

This implies that:

`5(4a + 7u) \to 20a + 35u`

Open bracket

`20a + 35u \to 20a + 35u`

SInce both sides of the equation are happy, then the expression is correct