Question

cost of book (x) close the externs twice the cost of (wall) close by 10 rupees the right the line equation in two variables to present this statement dot​

Answer 1

Answer

5x + 7y = 79, where x = cost of a book and y = cost of a pen.

The cost of 1 book=x

The cost of 1 pen=y

Then the linear equation is ⇒5x+7y=79

Answer

Answer 2

Answer:

Find the value of the Variable Z in 3 times of Z/4 = 1