Write an expression that is equivalent to - 30 + (-40) + (-70) using the commutative property of addition.

HINT: Your answer should be in this form: X + Y + Z NOT just one number

The desired expression is - 30 + (-70) + (-40) or - 70 + (-40) + (-30)

Step-by-step explanation:

Here, the given expression is - 30 + (-40) + (-70)

Let us assume here, X = (-30)

Y = (-40) and Z = (-70)

So, the given expressions is of the form X + Y + Z

Commutative Property states that for any number A, B and C:

A + (B+C) = (A+B) + C

So, here (X+Y) + Z = X + (Y + Z)

⇒The given expression can also be written as

-30 + (-70) + (-40), or, - 70 + (-40) + (-30)

Hence, the desired expression is - 30 + (-70) + (-40), or, - 70 + (-40) + (-30)