Question

8(7+х)-3х. 9(х+7)+6х. 2(13+х)-15

Answer 1

56+8x-3x=0
5x=-56
x=-11,2

26+2x-15=0
2x=-11
x=-5,5

9x+63+6x=0
15x=-63
x=-4,2

Answer 2

To simplify the given expression, let's perform the operations step by step:

1. 8(7 + x) - 3x
2. 9(x + 7) + 6x
3. 2(13 + x) - 15

Let's simplify each part:

1. 8(7 + x) - 3x Distribute the 8: 56 + 8x - 3x

   Combine like terms: 56 + 5x - 3x

   Simplify further: 56 + 2x

2. 9(x + 7) + 6x Distribute the 9: 9x + 63 + 6x

   Combine like terms: 15x + 63

3. 2(13 + x) - 15 Distribute the 2: 26 + 2x - 15

   Combine like terms: 2x + 26 - 15

   Simplify further: 2x + 11

So, the simplified expressions are:

1. 56 + 2x
2. 15x + 63
3. 2x + 11