Question

Solve:

7 = x + 12
A) -19
B) -5
C) 4
D) 5

Answer 1

Hello, there! :)

Answer:

x=-5

B. -5

*The answer must have a negative sign.*

Explanation:

Definition of subtraction property of equality.

Subtraction property of equality is subtracting the same number from both sides of an equation does not change the equation.

`a-c=b-c`

First, you had to switch sides.

`x+12=7`

Then, you subtract by 12 from both sides of an equation.

`x+12-12=7-12`

And finally, simplify or solve.

`7-12=-5`

`x=-5`

Hope this helps!

Thanks!

-Charlie

:)