Question

5pencils and 7pens cost rs 50 and another 7pencils and 5pems rs46 linear equations

Answer 1

5x+7y=50 (1) ×7
= 35x+49y=350


7x +5y =46.....(2) ×5
= 35x+25y= 230

Solving 1 and 2 will gice us the value of y
24y=120
y=5


Putting in 2
35x=105
x=3

Answer 2

Hy here is your answer

Thanks
Hope it will help you