8.Solution of the linear equation 7:9 y = 1:9 is
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7x-9y-19=0 ________ (1)
4x+5y-21=0 ________ (2)
multiplying equation (1) by (5) & (2) by 9 we get
⇒ 35x-45y-95=0
36x+45y-189=0
_________________
71x-284=0
x=284/71=4
[x=4] and 9y=7x-19=28-19=9
[y=1]
∴ value of [x=4] & [y=1]
Step-by-step explanation:
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