Question

x - y = 15 ; y = 5 solve and verify​

Answer 1

Answer:

y=5, x=20

Step-by-step explanation:

Since y=5

You substitute y=5 by putting 5 anywhere u see y

x-y=15

x-5=15

x=15+5

x=20

the truth sets( y=5, x=20)

Answer 2

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$x - y = 15 \: \: \: \: .........(1)$

$y = 5 \: \: .........(2)$

Putting y = 5 in Equation (1) we get

$x - 5 = 15$

$\implies \: x \: = 15 + 5 = 20$

Hence x = 20, y = 5

In order to Check whether x = 20, y = 5 is a solution of Equation (1) &. (2) we put x = 20, y = 5 in Equation (1) &. (2)

From Equation (1)

$20 - 5 = 15$

$\implies \: 15 = 15$

Again

Equation (2)

$5 = 5$

Hence x = 20, y = 5 is a solution

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