Question

if 3x + 5y = 4 and y = x / 5, then x = ?​

Answer 1

Answer: x = 1

Step-by-step explanation:

1) 3x + 5y = 4

2) y = x/5 or x - 5y = 0

Adding equations (1) and (2),

4x = 4 (y is eliminated using elimination method)

x = 1

Hope this helps you Mate

Answer 2

Answer:

HERE IS UR ANS

Step-by-step explanation:

$3x + 5y = 4 \\ 3x + 5( \frac{x}{5} ) = 4 \: (given \: y = \frac{x}{5} ) \\ 3x + \frac{5x}{5} = 4 \\ \frac{15x + 5x}{5} = 4 \\ \frac{20x}{5} = 4 \\ 20x = 4 \times 5 \\ 20x = 20 \\ x = \frac{20}{20} \\ x = 1$