Question

which substraction sentence does not have a value of -13

Answer 1

Answer:

An equation is a mathematical statement such that the expression on the left side of the equals sign (=) has the same value as the expression on the right side. An example of an equation is 6 - 4 = 2.

One of the terms in an equation may not be know and needs to be determined. Often this unknown term is represented by a letter such as x. (e.g. x - 4 = 2).

The solution of an equation is finding the value of the unknown x. To find the value of x we can use the additive equation property which says: The two sides of an equation remain equal if the same number is added to each side.

Example:

x - 5 = 7

+ 5 +5

x = 12

Check the answer by substituting the value of x (12) back into the equation.

12 - 5 = 7

7 = 7 (Correct!)

SUBTRACTION

Answer 2

Answer:

10-5

20-18

28-24

Step-by-step explanation:

Hope it helps