Question

2х + (-3х - 4у) + 5х – (2у – 3х) и -7 – (-2х + 10у) + (6у – 2х)

Answer 1

Ответ:

1) 7x - 6y

2) -7 -4y

Пошаговое объяснение:

1) 2х + (-3х - 4у) + 5х – (2у – 3х) = 2x - 3x - 4y + 5x - 2y + 3x = 7x - 6y

2) -7 – (-2х + 10у) + (6у – 2х) = -7 + 2x - 10y + 6y - 2x = -7 -4y

Answer 2

Let's simplify each expression step by step:

1. 2x + (-3x - 4y) + 5x - (2y - 3x) Group the like terms: (2x + 5x - 3x) + (-4y) - (2y) Combine the x terms and simplify: 4x - 4y - 2y Simplify the y terms: 4x - 6y

2. -7 - (-2x + 10y) + (6y - 2x) Distribute the negative sign inside the parentheses: -7 + 2x - 10y + 6y - 2x Combine the x terms and simplify: (2x - 2x) + (-10y + 6y) - 7 The x terms cancel each other out: 0 + (-4y) - 7 Simplify the y term: -4y - 7

Therefore, the simplified expressions are:

1. 4x - 6y
2. -4y - 7