Question

1. $5 + a = -20$
2. $y + 8 = 3$

uation in number 8
new equation by adding
e equation. ask a
the solution.
chapter 3 · solving equation

Explanation:

Step1: Isolate $a$ (subtract 5)

$5 + a - 5 = -20 - 5$

Step2: Simplify to find $a$

$a = -25$

Step3: Isolate $y$ (subtract 8)

$y + 8 - 8 = 3 - 8$

Step4: Simplify to find $y$

$y = -5$

Answer:

For problem 12: $a=-25$
For problem 15: $y=-5$