Question

2x + 5y = 9
4x - 2y = 1​

Answer 1

Answer:

i).7/5

Explanation:

(i) 2x +5y =9

let x be 1

2(1) + 5y =9

5y=9-2

5y= 7

y=7/5

Answer 2

Question:

• 2x + 5y = 9
• 4x - 2y = 1

Solution:

• 2x + 5y = 9

5y = 9 - 2x

$\frac{5y}{5} = \frac{9}{5} + \frac{-2x}{5}$

$= \frac{9}{5} + \frac{-2x}{5}$

$= \frac{9}{5}-\frac{2x}{5}$

________________

• 4x - 2y = 1

4x + -2y + 2y = 1 + 2y

combine like terms : -2y + 2y = 0

4x + 0 = 1 + 2y

4x = 1 + 2y

devide each term by '4'.

x = 0.25 + 0.5y

So , x = 0.25 + 0.5y