Question

Solve by substitution method 3x + 5y = 9 & 3x + 2y = 4

Answer 1

Answer:

y = 5/3 and x =2/9

Step-by-step explanation:

3x + 5y - 3x - 2y = 9 - 4

3y = 5

y = 5/3

put y= 5/3

3x + 5*5/3 = 9

3x = 9 - 25/3

3x = 2/3

x = 9/3

Answer 2

Step-by-step explanation:

3x + 5y = 9. ...(1)

3x + 2y = 4. ...(2)

from equation (2), we get,

x = (4-2y)/3. ...(3)

on substituting the value of x in (1), we get,

3[(4-2y)/3] +5y = 9

4-2y+5y = 9

3y = 5

y = 5/3

on putting the value of y in (3), we get,

x = (4-2× 5/3)/3

x = 2/9

thus, value of x and y are 2/9 and 5/3 respectively