Solve the Expression: Finding the Value of 55-7

To solve the problem of finding an equivalent expression for $55 - 7$, we will rewrite 7 as a sum of two numbers and then translate that into a two-step subtraction:

• Step 1: Decompose 7 as a sum of two numbers. For instance, 7 can be written as $5 + 2$. That means $7 = 5 + 2$.
• Step 2: Rewrite the original expression $55 - 7$ using this decomposition: $55 - 7 = 55 - (5 + 2).$
• Step 3: Apply sequential subtraction, which translates to: $55 - 5 - 2.$
• Step 4: Verify: We perform the subtraction operations: - $55 - 5 = 50$ - $50 - 2 = 48$

The expression $55 - 5 - 2$ evaluates to the same result as $55 - 7$, which is 48. The solution indicated that this is the correct choice as shown in the answer choices.

Therefore, the equivalent expression to the equation $55 - 7$ is $55 - 5 - 2$.