Respuesta :

The answer is d, you jus combine like terms, so 1.2y-3.4y and 4.5-6.3, hope this helps

The expression is equivalent to the given expression  by combining like terms is      [tex]-2.2y-1.8[/tex]            

Expression

An expression is a set of terms combined using the operations +, -, x or ÷

and the variables. Number, symbols and operators are grouped to form an expression .

An expression can be simplified by combining like terms.

Given expression is

[tex]1.2y+4.5-3.4y- 6.3[/tex]

The terms that has same variables are like terms

Combine like terms by adding or subtracting the terms

[tex]1.2y+4.5-3.4y- 6.3\\1.2y-3.4y+4.5- 6.3\\-2.2y-1.8[/tex]

-2.2y  and -1.8 are unlike terms because -2.2 y have variable y and -1.8 is a constant . so we cannot add or subtract it

The expression is equivalent to the given expression  by combining like terms is      [tex]-2.2y-1.8[/tex]  

Learn more information about 'expression' here:

brainly.com/question/17599464