The product of two rational numbers is -7. If one of the numbers is -10, find the other

Solution:

Convert the given statement into algebraic expression.

Given one number is -7

Let the other rational number be x

-10 × x = -7

x = -7/-10

x = 7/10

Cross verify, (7/10)(-10) = -7

✦ Try This: The product of two rational numbers is 5. If one of the numbers is -10, find the other.

☛ Also Check: NCERT Solutions for Class 8 Maths Chapter 1

NCERT Exemplar Class 8 Maths Chapter 1 Sample Problem 16

The product of two rational numbers is -7. If one of the numbers is -10, find the other

Summary:

The product of two rational numbers is -7. If one of the numbers is -10, then the other is 7/10

☛ Related Questions:

• A number which can be expressed as p/q where p and q are integers and q ≠ 0 is (a) natural number, ( . . . .
• A number of the form p/q is said to be a rational number if (a) p and q are integers, (b) p and q ar . . . .
• -3/8 + 1/7 = 1/7 + (-3/8) is an example to show that (a) addition of rational numbers is commutative . . . .