Question

the cost of 5 pens and 4 pencils is 66 write in linear equation in two variables class 9​

Answer 1

Answer:

5x+4y= 66

Please mark it brainliest if correct, thanks.

Step-by-step explanation:

Let Cost of pen be x and pencil be y

5pens=5x , 4pencils=4y

Total Cost is 66.

Therefore, 5x+4y= 66

Answer 2

Answer:

If the cost of 5 pens and 4 pencils is 66 , then the linear equation in two variables is 5x + 4y = 66

Step-by-step explanation:

If the cost of one pen = x

Then cost of 5 pens = 5x

If the cost of one pencil = y

then cost of 4 pencils = 4y

As per the given condition

The cost of 5 pens and 4 pencils is 66

5x + 4y = 66