Equivalent expressions are expressions with the same value.
The equivalent expression of [tex](-1.3x - 4.5)- (-2.1x + 3.6)[/tex] is [tex]0.8x -8.1[/tex]
Given that:
[tex](-1.3x - 4.5)- (-2.1x + 3.6)[/tex]
Open brackets
[tex](-1.3x - 4.5)- (-2.1x + 3.6) = -1.3x - 4.5+ 2.1x - 3.6[/tex]
Collect like terms
[tex](-1.3x - 4.5)- (-2.1x + 3.6) = -1.3x + 2.1x - 4.5 - 3.6[/tex]
[tex](-1.3x - 4.5)- (-2.1x + 3.6) = 0.8x -8.1[/tex]
Hence, the equivalent of [tex](-1.3x - 4.5)- (-2.1x + 3.6)[/tex] is [tex]0.8x -8.1[/tex]
Read more about equivalent expressions at:
https://brainly.com/question/18257981
