Exercise 1.8

## RD Sharma Class 8 Math First Chapter Rational Numbers Exercise 1.7 Solution

Exercise 1.7   1. Divide: 2. Find the value and express as a rational number in standard from: 9. Find (x+y) ÷ (x-y), if

## RD Sharma Class 8 Math First Chapter Rational Numbers Exercise 1.6 Solution

Exercise 1.6   1. Verify the property:  x⨯y = y⨯x by taking:   Solution: 2. Verify the property : x⨯(x⨯z) = (x⨯y) ⨯ z by taking:   Solution: 3. Verify the property: x⨯ ( y+z) = x⨯y+x⨯z by taking   Solution: 4. Use the distributivity  of multiplication of rational number over their addition to simplify: […]

## RD Sharma Class 8 Math First Chapter Rational Numbers Exercise 1.5 Solution

Exercise 1.5   1. Multiply 2. Multiply 3. Simplify each of the following and express the result as rational number as standard from: 4. Simplify 5. Simplify:

## RD Sharma Class 8 Math First Chapter Rational Numbers Exercise 1.4 Solution

Exercise 1.4   1. Simplify each other of the rational number and write as rational number of the form p/q : 2. Express each other of the following as rational number of the from p/q: 3. Simplify:

## RD Sharma Class 7 Math 9th Chapter Ratio and Proportion Exercise 9.3 Solution

Exercise 9.3   1. Which of the following are in proportion?   (i) 33, 44, 66, 88 Solution: We have, ∴ 33 : 44 = 66: 88 Thus, 33: 44, 66, 88 are in pro proportion (ii) 46, 69, 69, 46 Solution: We have: ∴  46: 69 ≠ 69: 46 Thus, 46, 69, 69, 46 […]

## RD Sharma Class 7 Math 9th Chapter Ratio and Proportion Exercise 9.2 Solution

Exercise 9.2   1. Which ratio is larger in the following pairs?   Solution: (i) Given 3:4 or 9:16 LCM FOR 4 AND 16 IS 16 3:4 Can be written as = 3/4 3/4 ×(4/4) = 12/16 Clearly 12>9 ∴ 3:4 > 9:12 (ii) Given 15 : 16 or 24 : 25 LCM for 16 […]

## RD Sharma Class 7 Math 9th Chapter Ratio and Proportion Variable Exercise 9.1 Solution

Exercise 9.1   1. If x: y = 3: 5, find the ratio 3x + 4y: 8x + 5y.a   Solution:   We have, 2. If x: y = 8: 9, find the ratio (7x – 4y): 3x + 2y.   Solution: 3. If two numbers are in the ratio 6:13 and their L.C.M is […]

## RD Sharma Class 7 Math 8th Chapter Linear Equations in One Variable Exercise 8.4 Solution

Exercise 8.4   1. If 5 is subtracted from three times a number, the result is 16. Find the number.   Solution: Let the required number be ‘x’. Then, 5 subtracted from 3 times x = 3x – 5. = 3x – 5 = 16 Adding 5 to both sides, we get = 3x – […]

## RD Sharma Class 7 Math 8th Chapter Linear Equations in One Variable Exercise 8.3 Solution

Exercise 8.3   1. 6x + 5 = 2x + 17 Solution: We have 6x + 5 = 2x+ 17 Transposing 2x to LHS and 5 to RHS, we get 6x – 2x = 17 – 5 4x = 12 Dividing both sides by 4, we get 4x/4 = 12/4 x = 3 Verification: Substituting […]