Question

7(3x+8)-(-(9+x))+(2-5x)*(-4)

Answer 1

21х+56+9+х+2+20х
42х+67

Answer 2

To simplify the given expression, let's follow the order of operations (PEMDAS/BODMAS: Parentheses/Brackets, Exponents/Orders, Multiplication and Division, Addition and Subtraction):

Expression: 7(3x+8) - (-(9+x)) + (2-5x)(-4)

1. Distribute the 7 into the first set of parentheses: 7 * 3x + 7 * 8

   Result: 21x + 56

2. Deal with the double negative in the second set of parentheses: -(-9-x)

   This is equivalent to: 9 + x

3. Distribute the (2-5x) into the third set of parentheses: (2 * -4) - (5x * -4)

   Result: -8 + 20x

Now we have simplified each part of the expression:

• First part: 21x + 56
• Second part: 9 + x
• Third part: -8 + 20x

Now combine the simplified parts:

21x + 56 - (9 + x) + (-8 + 20x)

Combine like terms:

21x - x + 20x + 56 - 9 - 8

Combine constants:

(21x - x + 20x) + (56 - 9 - 8)

Combine the x terms:

40x + 39

So, the simplified expression is:

40x + 39