Solve for x and y by elimination by equating coefficients method
11x+15y+24=0;7x-2y-20=0
Answers
Answered by
2
Step-by-step explanation:
(11x+15y= -24) x 7 & ( 7x-2y=20)x 11
⇒77 x+105y=-168 & 77x-22 y= 220
Subtracting these equations
77×+105y=-168
-77x+22 y=-220
⇒127y=-388
y=-388/127
Now put this y in first equation
x= -6/ 127
Similar questions