Question

4y + y/5 = 21 ..............

Answer 1

Step-by-step explanation:

$4y + \frac{y}{5} = 21 \\ \\ \frac{20y + y}{5} = 21 \\ \\ \frac{21y}{5} = 21 \\ \\ 21y = 105 \\ \\ y = \frac{105}{21} \\ \\ y = \frac{35}{7} \\ \\ y = 5$

Answer 2

Answer:

$4y + \frac{y}{5} = 21 \\ \\ \frac{20y + y}{5} = 21 \\ \\ 21y = 21 \times 5 \\ \\ 21y = 105 \\ \\ y = \frac{105}{21} \\ \\ y = 5$