The equation is 23 = v + 5.

(Apply subtraction property of equality: If a = b, then )

23 – 5 = v + 5 – 5       (Subtract 5 from each side)

23 – 5 = v                   (Apply additive inverse property: 5 – 5 = 0)

v = 18                          (Subtract: 23 – 5 = 18)

Check:

To check the solution substitute v = 18 in original equation.

23 = 18 + 5

23 = 23                       (Add: 18 + 5 = 23)

The equality is true.

The value of v = 18.