Question

3(x-7)+5x 5(4-3x)+8x

Answer 1

3х-21+5x= 3x+5x=8x-21
20-15х+8х=8x-15x=-7x+20x

Answer 2

1) 3x-21+5x=8x-21
2) 30-15x+8x=30-7x

Answer 3

To solve the expression 3(x-7) + 5x + 5(4-3x) + 8x, we'll follow the order of operations, which is also known as PEMDAS (Parentheses, Exponents, Multiplication and Division, and Addition and Subtraction).

Let's break down the expression step by step:

1. Start by simplifying within the parentheses: 3(x-7) = 3x - 21

2. Next, simplify the expression within the parentheses: 5(4-3x) = 20 - 15x

Now the expression becomes: 3x - 21 + 5x + 20 - 15x + 8x

3. Combine like terms: The terms with "x" are 3x, 5x, -15x, and 8x. Combining them, we get: 3x + 5x - 15x + 8x = 6x - 15x + 8x = -x + 8x = 7x

4. Combine the constants: The constants are -21 and 20. Combining them, we get: -21 + 20 = -1

5. Finally, combine the x term and the constant: The expression becomes: 7x - 1

So, the simplified form of the expression 3(x-7) + 5x + 5(4-3x) + 8x is 7x - 1.