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.*

Step-by-step 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

:)