### Theory:

Formation of an expression:

An expression can also be written in words.

Let us look at a few expressions and their definitions.

 Expression Definition $$x + 3$$ $$3$$ added to $$x$$ $$2x$$ $$2$$ times $$x$$ $$4x + 2y$$ First $$x$$ is multiplied by $$4$$ and is added to $$y$$ multiplied by $$2$$ $$-5p$$ $$p$$ multiplied by $$-5$$

Let us look at a few examples based on the formation of expressions.

1. How do you define $$6x + 4y$$?

It is defined as '$$x$$ multiplied by $$6$$ and added to $$y$$ multiplied by $$4$$'.

2. How do you express $$8$$ times $$t$$?

$$8$$ times $$t$$ can be expressed as $$8t$$.