Question

Solve by using systematic method. 3(7x -1) = 4x + 6​

Answer 1

Answer: i) 7x=28

Divide both sides by 7

7

7x

​

=  

7

28

​

 

⇒x=4

(ii) 2x+7=13

Add −7 to both sides,

2x+7−7=13−7

2x=6

Divide both sides by 2, we get

2

2x

​

=  

2

6

​

∴x=3

(iii) −y+36=32

Add −36 both sides, we get  

−y+36−36=32−36

⇒−y=−4

Multiply (−1) to both sides we get

⇒(−1)(−y)=(−1)(−4)

⇒y=4

(iv) 2y−6=8

Add 6 to both sides we get

2y−6+6=8+6

⇒2y=14

Divide both sides by 2, we get

2

2y

​

=  

2

14

​

 

∴y=7

.

Step-by-step explanation:

Answer 2

Step-by-step explanation:

3(7x-1)=4x+6

21x-3=4x+6

21x-4x=6+3

17x=9

x=9/17

Hope this answer helps you!