Question

Simplify. 3.2 = n + 7.8 A. −4.6 B. 4.6 C. −5.6 D. 5.6

Answer 1

`3.2=n+7.8`
switch sides

`n+7.8=3.2`
subtract 7.8 from both sides

`n+7.8-7.8=3.2-7.8`
simplify

`n=-4.6`
so the answer is A
Hope this helps :)