Question

class 8th maths chapter 1 rational number​

Answer 1

Answer:

Answer of 7 is 2x + 5 = 11, Answer of 8 a is 1, and Answer of 8 b is 3/2.

Step-by-step explanation:

Answer of 7 is not explainable.

8A) 4x + 5 = 9

4x = 9-5

4x = 4

x = 4/4

x = 1

8B) x + 3/2 =2x

3/2 = 2x-x

3/2 = x

Answer 2

Answer:

7) When 5 is added to twice a number, it gives 11

let's take x as the number.then,

The equation is 5+2x=11.

8) (a) 4x+5=9

or,4x=9-5

or,x= 4/4=1

(b) x+3/2=2x

or,x-2x=-3/2

or, -x=-3/2

or,x=3/2

hope it helps :) bye,have a good day ahead