Question

7x+8y=75
5x+4y=45 ko multiply karne par solutions

Answer 1

Step-by-step explanation:

• ( 7x + 8y = 75. ) × 5 --------(1)
• ( 5x + 4y = 45. ) × 7---------(2)
• substract both equations
• 12y = 60
• y = 60/12
• y = 5

putting these value in equation (1)

• 7x + 8×5 = 75
• 7x + 40 = 75
• 7x = 35
• x = 35/7
• x = 5

x = 5 & y = 5 .....Ans.