NCERT CLASS 7 MATHS 2025 CHAPTER 4 E SIMPLE EQUATIONS PAGES 68, 69, 70 & 71

Описание: NCERT CLASS 7 MATHS 2025

CHAPTER 4 E SIMPLE EQUATIONS PAGES 68, 69, 70 & 71

4.5 MORE EQUATIONS

EXAMPLE 6 Solve: 12p – 5 = 25

Transposing a number (i.e., changing the side of the number) is the same as adding or subtracting the number from both sides.

EXAMPLE 7

Solve
(a) 4(m + 3) = 18
(b)– 2(x + 3) = 8

4.6 APPLICATIONS OF SIMPLE EQUATIONS TO PRACTICAL SITUATIONS

EXAMPLE 8

The sum of three times a number and 11 is 32. Find the number.

EXAMPLE 9

Find a number, such that one-fourth of the number is 3 more than 7.

TRY THESE

1. When you multiply a number by 6 and subtract 5 from the product, you get 7. Can you tell what the number is?

2. What is that number one third of which added to 5 gives 8?

EXAMPLE 10

Raju’s father’s age is 5 years more than three times Raju’s age. Find
Raju’s age, if his father is 44 years old.

TRY THESE

There are two types of boxes containing mangoes. Each box of the larger type contains 4 more mangoes than the number of mangoes contained in 8 boxes of the smaller type. Each larger box contains 100 mangoes. Find the number of mangoes contained in the smaller box?