Question

If p = 0.75 and q = -1.6, evaluate: p + q - ( -0.7)?

Answer 1

`=-0.15`

Explanation:

Do to this, we'll use a method known as substitution. Basically, (in this case) whenever we see the letter `p` or `q`, we'll replace it with something else.

`p+q-(-0.7)=(0.75)+(-1.6)-(-0.7)`
`=0.75-1.6+0.7`
`=-0.15`

If you need further explanation of substitution, please say so