Question

4 + 2(a + 5) <-2-a – 4)

Answer 1

Answer:

a>-40

Step-by-step explanation:

$4 + 2(a + 5) < - 2 - a - 4 \\ 4 + 20 + 10 < - 2 - a - 4 \\ 34 < - 2 - a - 4 \\ 34 + 2 < - 2 - a + 4 + 2$

$36 < - a - 4 \\ 36 + 4 < - a - 4 + 4 \\ 40 < - a \\ \frac{40}{ - 1} < \frac{ - a}{ - 1}$

$a > 40$

1. Step1 : Use 2 to open the bracket
2. Add 4+10+20
3. Subtract +2 from both sides
4. Add + 4 to both sides
5. Divide both sides by -1 and flip the sign.