Question

A number added to -19 is -21
x= -19 +21
-19-21 = x
-19 + x = -21
x -21 = -19

Answer 1

(c) -19 + x = -21

Explanation:

You want the mathematical expression equivalent to the English sentence "a number added to -19 is -21."

Expressions

Addition is written using the math plus symbol (+).

The English word "is" usually signifies sameness or equality, expressed using the math equal sign (=).

The variable x is often used to represent "a number."

When a number is added to -19, we start with -19, then, using the plus symbol, we add x:

"a number added to -19" ⇒ -19 + x

"is" ⇒ =

"-21" ⇒ -21

So, the translated description is ...

-19 + x = -21