4 × y - y = 36
4y - y = 36
Combining 4y and -y to get 3y
3y = 36
Dividing both sides by 3
y = 36/3
y = 12.
[tex]4 \times y - y = 36 \\ = > 4y - y = 36 \\ = > 3y = 36 \\ = > y = \frac{36}{3} \\ = > y = 12[/tex]