Question

(i) y + 9 = 13
solve each of the question from trial and error method​

Answer 1

Answer:

$let \: y \: = 2 \\ 2 + 9 = 11 \cancel= 13 \\ \\ let \: y = 4 \\ 4 + 9 = 13 = 13 \\ : \implies \underline{\boxed{y = 4}}$

Answer 2

Step-by-step explanation:

Answer:

let y=2

2+9=11

= 13

let y=4

4+9=13

:⟹ y=4