Question

If (2s + 1, –s) is a solution of the equation 6x – 9y = 30, then find the value of 2s + 1.
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Answer 1

Answer:

• 2s + 1 = 79/21

Explanation:

The equation 6x - 9y = 30

Whose solution is (2s + 1, -s)

Then,

• x = (2s + 1)
• y = -s

Substituting the values,

→ 6(2s + 1) - 9(-s) = 30

→ 12s + 1 + 9s = 30

→ 21s + 1 = 30

→ 21s = 30 - 1

→ 21s = 29

→ s = 29/21

∴ s = 29/21

Hence the value of 2s + 1 is :-

→ 2(29/21) + 1

→ 58/21 + 1

→ 79/21