Answer:
Two subtraction expressions to find 15 minus 7 are (10 - 5) + (5 - 2)
Explanation step by step:
Given the task,
We must express 15 - 7 using two subtraction equations.
Break down 15 as:
15 = 10 + 5
And express 7 as:
7 = 5 + 2
Replace these in the original subtraction:
(10 + 5) - (5 + 2)
Distribute the subtraction:
10 + 5 - 5 - 2
Rearranged it becomes:
10 - 5 + 5 - 2
Group terms in parentheses:
(10 - 5) + (5 - 2)
Therefore, the two subtraction expressions are (10 - 5) + (5 - 2)
