Question

If πx + 3y = 25 and y= 1 then find x

Answer 1

$\pi x + 3y = 25 \: \: \: \: \: \: \: \: \: \: \:\& \: \: \: \: \: \: \: \: \: \: \: \: y = 1$

Now,

$\pi{x} + 3(1) = 25 \\ \: \: \: \: \: \: \pi{x} + 3 = 25 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \pi{x} = 25 - 3 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: x = \frac{22}{\pi} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \red{x = \frac{22}{ \frac{22}{7} } = \frac{22 \times 7}{22} = 7}$

Answer 2

Answer:

πx + 3y = 25 given y=1. 22÷7 × x + 3 × 1 = 25. 22 ÷ 7 × x + 3 = 25. 22 ÷ 7 × x = 25 _ 3 = 22. x = 22 ÷ 1 × 7 ÷ 22 = 7. Therefore x = 7