Math Problem Statement

Запитання №7: Розкрий дужки й спрости вираз: -( -a + 5 ) + 5 = ____ 5 + 5 = ____ Запитання №8: Розкрий дужки й спрости вираз: -y - (-y + a - b) = -y ____ y ____ a ____ b

Solution

The image contains two algebraic expressions that require simplification. Let's go step by step.

For Question 7:

The expression given is:
(a+5)+5=__and5+5=__-( -a + 5) + 5 = \_\_ \quad \text{and} \quad 5 + 5 = \_\_

  • First, simplify the first part:

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Math Problem Analysis

Mathematical Concepts

Algebra
Simplification of Expressions
Distributive Property

Formulas

Distributive Property: a(b + c) = ab + ac

Theorems

Simplification of algebraic expressions

Suitable Grade Level

Grades 7-9