Question

plzz solve by rlimination method
3x- 5y-4=0 & 9x= 2y+7

Answer 1

Heya !!!


3X - 5Y - 4 = 0


3X - 5Y = 4 ---------(1)



9X = 2Y +7


9X - 2Y = 7 ---------(2)



Multiply equation (1) by 3 and equation (2) by 1 we get,


9X - 15Y = 12 -------(3)



9X - 2Y = 7 ---------(4)



subtract equation (4) from equation (3) we get,



9X - 15Y = 12
9X - 2Y = 7
___________

-13Y = 5


Y =-5/13



Putting the value of Y in equation (1)



3X - 5Y = 4


3X - 5 × -5/13 = 4


3X +25/13 = 4



39X + 25 = 13 × 4



39X = 52-25


39X = 27



X = 27/39 => 9/13




HOPE IT WILL HELP YOU..... :-)