Question

What is the answer to 5+5(x+4)≤20?

Answer 1

`5+5(x+4) \leq 20`

`5+5x+20 \leq 20`

`5+5x \leq 0`

`5(1+x) \leq 0`

`1+x \leq 0`

`x \leq -1`

Answer 2

`5+5\left( x+4 \right) \le 20\\ \\ 5\left\{ 1+\left( x+4 \right) \right\} \le 20\\ \\ \frac { 1 }{ 5 } \cdot 5\left\{ 1+\left( x+4 \right) \right\} \le 20\cdot \frac { 1 }{ 5 }`


`\ \\ 1+\left( x+4 \right) \le 4\\ \\ 1+x+4\le 4\\ \\ x+5\le 4\\ \\ x\le 4-5\\ \\ x\le -1`