Answer:
The equivalent expression is [tex]3.4-2.8d+2.8d-1.3=2.1[/tex].
Step-by-step explanation:
Given : Expression [tex]3.4-2.8d+2.8d-1.3[/tex]
To find : Combine like terms to create an equivalent expression ?
Solution :
Expression [tex]3.4-2.8d+2.8d-1.3[/tex]
Combine like terms,
[tex]3.4-2.8d+2.8d-1.3=(3.4-1.3)+(-2.8d+2.8d)[/tex]
[tex]3.4-2.8d+2.8d-1.3=2.1+0[/tex]
[tex]3.4-2.8d+2.8d-1.3=2.1[/tex]
Therefore, the equivalent expression is [tex]3.4-2.8d+2.8d-1.3=2.1[/tex].