Question

1. 10(5 - n) - 1 = 29

Explanation:

Step1: Expand the left-hand side

$10\times5 - 10n - 1 = 29$
$50 - 10n - 1 = 29$

Step2: Simplify constants on left

$49 - 10n = 29$

Step3: Isolate the term with $n$

$-10n = 29 - 49$
$-10n = -20$

Step4: Solve for $n$

$n = \frac{-20}{-10}$

Answer:

$n=2$