(-2,4)-(-3,6+7) ・・(-4,8)・・(-10)

The problem involves two separate mathematical expressions written in a somewhat unconventional format. Let's break them down.

Expression 1:

The first expression appears to be (-2, 4) - (-3, 6 + 7). This might represent operations with points or vectors in a 2D plane, or it could be a misinterpretation of a different mathematical notation.

• If interpreted as coordinate pairs: (-2, 4) and (-3, 6 + 7) which simplifies to (-3, 13). The operation between them is subtraction.
• Performing subtraction of coordinate pairs: (-2, 4) - (-3, 13) = (-2 - (-3), 4 - 13) = (-2 + 3, -9) = (1, -9).

Expression 2:

The second expression is - (-4, 8) - (-10). This expression is more ambiguous.

• If - (-4, 8) is interpreted as scaling the point (-4, 8) by -1, it becomes (4, -8).
• The - (-10) part could be adding 10 if it's a separate term.
• If the dots (・・) are multiplication symbols: (-4 * 8) * (-10). This would be (-32) * (-10) = 320.
• If the entire second line is intended to be part of the first expression, it's extremely unclear how it connects.

Given the ambiguity and unusual notation, a definitive step-by-step solution for the second part is not possible without further clarification on the intended mathematical operations and structure.

Possible Interpretation and Calculation for Expression 1:

• Start with the first coordinate pair: (-2, 4).
• The second coordinate pair is (-3, 6 + 7), which simplifies to (-3, 13).
• The operation is subtraction: (-2, 4) - (-3, 13).
• Subtract the x-coordinates: -2 - (-3) = -2 + 3 = 1.
• Subtract the y-coordinates: 4 - 13 = -9.
• The result is the coordinate pair (1, -9).

Answer: (1, -9) for the first expression. The second expression is too ambiguous to solve definitively.