Question

simple equation of class 7​

Answer 1

Answer:

Question 1.

Write the following statements in the form of equations.

(a) The sum of four times a number and 5 gives a number five times of it.

(b) One-fourth of a number is 2 more than 5.

Solution:

(a) Let the number be x.

Sum of 4x and 5 = 4x + 5

The sum is 5x.

The equation is 4x + 5 = 5x as required.

(b) Let the number be x.

14x = 5 + 2

⇒ 14x = 7 as required.

Question 2.

Convert the following equations in statement form:

(a) 5x = 20

(b) 3y + 7 = 1

Solution:

(a) Five times a number x gives 20.

(b) Add 7 to three times a number y gives 1.