Please answer step wise
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Answer:
Step-by-step explanation:
(x+9y+8)/3=(4x+7y+12)/5
=》5x+45y+40=12x+21y+36
=》12x-5x+21y-45y+36–40=0
=》 7x-24y-4=0 =》7x-24y-=4——————(1)
(2x-3y+1)/2=(x+9y+8)/3
=》6x-9y+3=2x+18y+16
=》6x-2x-9y-18y+3–16=0
=》4x-27y-13=0 =》4x-27y=13————————-(2)
Solving quadratic equations (1) & (2) :
(7x-24y=4)×4 =》28x-96y=16=》28x-96y-16=0
(4x-27y=13)×7=》28x-189y=91=》28x-189y-91=0.
Solving both the equations we get :
28x-96y-16=28x-189y-91
= 28x-28x-96y+189y-16+91=0
= 93y+75=0=》93y=-75=》y=-(75/93).
=》y=-0.80645 (approximately)
We have : 7x-24y=4 =》 7x-24(-75/93)=4
=》7x+((24×75)/93)=4 =》 7x=4-((24×75)/93)
/》 x=-15.35484 (approximately)
So, (x+y)= (-75/93)+(4-((24×75)/93)
》 (x+y)= -16.1612903226…(approximately)