Question

1. $-6x - 10 = 20$
2. $10 = -9 - x$

Explanation:

Step1: Solve -6x -10 =20, isolate x term

Add 10 to both sides:
$-6x -10 +10 = 20 +10$
$-6x = 30$

Step2: Solve for x (first equation)

Divide by -6:
$x = \frac{30}{-6}$
$x = -5$

Step3: Solve 10 = -9 -x, isolate x term

Add 9 to both sides:
$10 +9 = -x$
$19 = -x$

Step4: Solve for x (second equation)

Multiply by -1:
$x = -19$

Answer:

For question 15: $x=-5$
For question 16: $x=-19$