Question

7x+3y=15 equation 1 and 5x-12y=39 sovle the equation by simultaneous method​

Answer 1

Answer:

step by step explanation

elemination method

5(7x+3y=15)=35x+15y=75

7(5x-12y=39)=35x-84y=273

-. +. -

99y=-198

y=198/99

y=2

substitute y value in equation 1

7x+3(2)=15

7x+6=15

7x=15-6

7x=9

x=9/7