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12 Five years later, I shall be two and a half times as old as by son. Write 3
a linear equation in two variables to represent this statement.
13 Express x in terms of y, given that 2y – 4x = 7. Check whether 3
(–1, –1) is a point on the given line.
14 4
A and B each have certain number of oranges. A says to B, "if you
give me 10 of your oranges, I will have twice the number of oranges
left with you. Write a linear equation in two variables to represent this
statement. Draw its graph.
15 Represent the solution of the equation 4x – 15 = 5. 4
(i) on number line
(ii) in cartesian plane

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