What value of x is the solution to the equation x + 10 = 3? (March 2023 U.S.)

Correct answer: B. –7.
The equation we need to solve is x + 10 = 3.
To isolate x, we need to get rid of the 10 on the left side of the equation.
We can do this by subtracting 10 from both sides.

Subtracting 10 from both sides gives:
x + 10 - 10 = 3 - 10

Simplifying both sides, we get:
x = -7

Therefore, the value of x that solves the equation is -7.
So the answer is B. -7.