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Standard VII

Mathematics

Methods of Solving an Equation

Question 7In ...

Question

Question 7

In the following question out of the four options only one is correct, write the correct answer.

If a and b are positive integers, then the solution of the equation ax=b has to be always:

(a) positive

(b) negative

(c) one

(d) zero

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Solution

If ax=b, then $x = \frac{b}{a}$
Since, a and b are positive integers.
So, $\frac{b}{a}$ is also positive integer.
Hence, the solution of the given equation has to be always positive.

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Question 7

In the following question out of the four options only one is correct, write the correct answer.

If a and b are positive integers, then the solution of the equation ax=b has to be always:

(a) positive

(b) negative

(d) zero

Question 10

In the following question out of the four options only one is correct, write the correct answer.

A linear equation in one variable has:

(a) Only one solution

(b) Two solutions

(d) No solution

Question 2

In the following question out of the four options only one is correct, write the correct answer:
(a) $x = \frac{a}{b}$
(b) $x = - b$
(c) $x = \frac{- b}{a}$
(d) $x = \frac{b}{a}$
The solution of the equation ax+b=0 is:

Q. In the following question out of the four options only one is correct, write the correct answer:
(a)

x = \frac{a}{b}

(b)

x = - b

(c)

x = \frac{- b}{a}

(d)

x = \frac{b}{a}

The solution of the equation ax + b = 0 is:

Question 2

If a and b are positive integers, then the solution of the equation ax = b will always be a

(a) positive number

(b) negative number

(d) 0

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Methods of Solving an Equation

Standard VII Mathematics

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Question 7 In the following question out of the four options only one is correct, write the correct answer. If a and b are positive integers, then the solution of the equation ax=b has to be always: (a) positive (b) negative (c) one (d) zero

If ax=b, then x=ba Since, a and b are positive integers. So, ba is also positive integer. Hence, the solution of the given equation has to be always positive.

Question 7

In the following question out of the four options only one is correct, write the correct answer.

If a and b are positive integers, then the solution of the equation ax=b has to be always:

(a) positive

(b) negative

(c) one

(d) zero

If ax=b, then $x = \frac{b}{a}$
Since, a and b are positive integers.
So, $\frac{b}{a}$ is also positive integer.
Hence, the solution of the given equation has to be always positive.