Question

3(х+4)-3(5-х)-х-3 4(х+3)-(2-х)-(1+4)х-2 3(х+5)-4(5-х)-(4+3)х-1

Answer 1

Ответ:

3(х+4)-3(5-х)-х-3 = 3х+12-15+3х-х-3 = 5х-6

4(х+3)-(2-х)-(1+4)х-2 = 4х+12-2+х-5х-2 = 8

3(х+5)-4(5-х)-(4+3)х-1 = 3х+15-20+4х-7х-1 = -6

Answer 2

Let's simplify each expression step by step:

1. 3(x+4) - 3(5-x) - x - 3

Expanding the brackets: 3x + 12 - 15 + 3x - x - 3

Combining like terms: 3x + 3x - x + 12 - 15 - 3

Simplifying further: 5x - 6

Therefore, the simplified form of the first expression is 5x - 6.

2. 4(x+3) - (2-x) - (1+4)x - 2

Expanding the brackets: 4x + 12 - 2 + x - x - 5x - 2

Combining like terms: 4x + x - x - 5x + 12 - 2 - 2

Simplifying further:

• x + 8

Therefore, the simplified form of the second expression is -x + 8.

3. 3(x+5) - 4(5-x) - (4+3)x - 1

Expanding the brackets: 3x + 15 - 4(5) + 4x - (4 + 3)x - 1

Simplifying within the brackets: 3x + 15 - 20 + 4x - 7x - 1

Combining like terms: 3x + 4x - 7x + 15 - 20 - 1

Simplifying further: x - 6

Therefore, the simplified form of the third expression is x - 6.

To summarize:

1. 3(x+4) - 3(5-x) - x - 3 simplifies to 5x - 6.
2. 4(x+3) - (2-x) - (1+4)x - 2 simplifies to -x + 8.
3. 3(x+5) - 4(5-x) - (4+3)x - 1 simplifies to x - 6.