Class 8 Linear Equations In One Variable CBSE Questions & Answers

Fifteen years from now Ravi’s age will be four times his present age. What is Ravi’s present age?

Solve: \({\text{2}}x--{\text{ 3 }} = x + {\text{ 2}}\)

Solve: \({\text{3}}x = {\text{ 2}}x + {\text{ 18}}\)

Solve: \({\text{5}}t--{\text{ 3 }} = {\text{ 3}}t--{\text{ 5}}\)

Solve: \({\text{5}}x + {\text{ 9 }} = {\text{ 5 }} + {\text{ 3}}x\)

Solve: \({\text{4}}z + {\text{ 3 }} = {\text{ 6 }} + {\text{ 2}}z\)

Solve: \({\text{2}}x--{\text{ 1 }} = {\text{ 14 }}--x\)

Solve: \({\text{8}}x + {\text{ 4 }} = {\text{ 3 }}\left( {x--{\text{ 1}}} \right){\text{ }} + {\text{ 7}}\)

The digits of a two-digit number differ by 3. If the digits are interchanged, and the resulting number is added to the original number, we get 143. What can be the original number?

Arvind is twice as old as Shaali. Five years ago his age was three times Shafali’s age. Find present ages.

A positive number is 5 times another number. If 21 is added to both the numbers, then one of the new numbers becomes twice the other new number. What are the numbers?

Sum of the digits of a two-digit number is 9. When we interchange the digits, it is found that the resulting new number is greater than the original number by 27. What is the two-digit number?

One of the two digits of a two digit number is three times the other digit. If you interchange the digits of this two-digit number and add the resulting number to the original number, you get 88. What is the original number?

Half of a herd of deer are grazing in the field and three fourths of the remaining are playing nearby. The rest 9 are drinking water from the pond. Find the number of deer in the herd.

Solve: \(\frac{x}{3} + 1 = \frac{7}{{15}}\)