how to solve : X + 5Y = 350, X + 20 Y = 800
Answers
Answer: Solve it like this
Step-by-step explanation: X+ 5Y = 350 ------------> (1)
X+ 20Y=800-------------> (2)
(2) - (1)
X+ 20Y- (X+5Y) = 800- 350
X+20Y- X-5Y= 450
15Y= 450
15Y/ 15 = 450/15
Y = 30
_____________________________________________
X+5Y = 350
X+ 5(30) = 350
X+ 150 = 350
X = 350- 150
X= 200
That's all
Vety easy