`4x - 5y = 39 2x - 7y=51`

Multiply (4x + 5y) xx (9x + 7y)

Solve the equations 4x + 5y = 42 and x + 8y = 51 for x and y.

Solve the following paris of linear (simultaneous) equation using method of elimination by substution: 2x + 7y = 39 3x + 5y = 31

Solve the equations 4x+5y = 42 and x+ 8y = 51 for x and y.

Let's add : 4xy + 5x + 7y, - 4xy - y - 3x, 3xy - 3y + 2x

Two adjacent sides of the parallogram are 4x + 5y = 0 and 7x + 2y = 0 one diagonal of the parallogram is along line 11x + 7y = 9. Then find equation of other diagonal.

Two adjacent sides of a parallelogram are 4x + 5y = 0 and 7x + 2y = 0 . if the equation of it's one diagonal be 11x +7y = 9 , Area of parallelogram is