Answer:
[tex]3.5r-7[/tex]
Step-by-step explanation:
Both of the r's are like terms, so you can combine them:
[tex]6.4r-7-2.9r[/tex]
[tex](6.4r-2.9r)-7[/tex]
3.5r-7
So you are just combining like terms
6.4r
-7
-2.9r
so you will combine 6.4 and -2.9 and that equals 3.5(add the variable)
And then -7
so
