Question

Draw a model or use numbers to solve the equation 3+x= 11. What is the solution?

Answer 1

Answer:

The solution of the equation $3 + x = 11$ is $x = 8$.

Step-by-step explanation:

Let $3 + x = 11$, we see that number of equation and variables are both the same and can be solved by algebraic means.

1) $3 + x = 11$ Given

2) $x + 3 = 11$ Commutative property

3) $x + [3+(-3)] = 11 + (-3)$ Compatibility with addition/Associative property

4) $x = 8$ Additive inverse/Modulative property/Definition of substraction/Result

The solution of the equation $3 + x = 11$ is $x = 8$.