# Simple Equations – Chapter 4/ CBSE Class 7 Maths

**Simple Equations – Chapter 4/ CBSE Class 7 Mathematics is about the Model Questions that you can expect for Yearly Examination. Here you can find out practice problems for Class 7 Mathematics.**

**Simple Equations – Chapter 4/Extra Questions/ CBSE Class 7 MathematicsModel Questions/Important QuestionsFill in the blanks:**

**If 3a = 42, then value of a is ————–****If 2x – 4 = 6, then value of x is ———-****The solution of the equation 3y + 3 = 12 is ————-****‘Three times a number y subtracted from 12 is 5’ can be written as ———-****If 5p + 2 = 12, then the value of p is ————-**

Answer the following:**Solve 5p – 3 = 27****Solve 2(m + 4) = 8****Manu’s father’s age is 4 years more than 3 times Manu’s age. Find Manu’s age if his father is 55 years old.****The sum of 2 times of a number and 7 is 35. Find the number?****Solve:**

a) 3p = 0

b) 3y + 4 = 25**Find the value of y for which the expressions y – 15 and 2y + 1 are equal.****If k + 3 = 8, find the value of 3k – 7?****10 times a number is 3 less than 4 times the same number. Find the number?****Write the algebraic equation and solve; 3 more than 5 times a number is 18.****Solve**

a) 3(p + 4) = 5

b) 2y – 5 = 5

**ANSWERS:**

**a = 14****x = 5****y = 3****12 – 3y = 5****p = 2****5p – 3 = 27**

5p = 27 + 3 = 30

p = 30/5 = 6**2(m + 4) = 8**

m + 4 = 8/2 = 4

m = 4 – 4 = 0**Let Manu’s age be x.**

Given 3x + 4 = 55

3x = 55 – 4 = 51

x = 51/3 = 17**Let the number be y.**

Given 2y + 7 = 35

2y = 35 – 7 = 28

y = 28/2 = 14**a) 3p = 0**

p = 0/3 = 0

b) 3y + 4 = 25

3y = 25 – 4 = 21

y = 21/3 =7**Given y – 15 = 2y + 1**

y – 2y = 1 + 15

-y = 16

y = -16**If k + 3 = 8, k = 8 – 3 = 5**

Then 3k – 7 =3 x 5 – 7 = 15 – 7 = 8**The equation is 10x = 4x – 3**

10x – 4x = -3

6x = -3

x = -3/6 = -1/2**Let the number be z.**

The required equation is 3 + 5z = 18**a) 3( p + 4) = 5**

3p + 12 = 5

3p = 5 – 12 = -7

p = -7/3

b) 2y – 5 = 5

2y = 5 + 5 = 10

y = 10/2 = 5