Question

x + 6 = 13
choose one option
a add 6 to 13.
b add 6 to both sides.
c subtract x from both sides.
d subtract 6 from both sides.

Explanation:

Step1: Isolate x via inverse operation

To solve for $x$, we need to eliminate the $+6$ on the left side. The inverse of adding 6 is subtracting 6.

Step2: Apply operation to both sides

To keep the equation balanced, we must perform the same operation on both sides of the equation.
$x + 6 - 6 = 13 - 6$

Step3: Simplify to find x

$x = 7$, which is achieved by subtracting 6 from both sides.

Answer:

D. Subtract 6 from both sides.