Question

4. Solve the following equations and verify your answers:
(i) 3 (x + 7) = 18
(ii) 2 (x - 1) = x + 2
(iii) 3x
+ ( + 5
(iv) 4(2x - 1) - 2 (x - 5) = 5( x +1 )+3​

Answer 1

Answer:

Solve the following: x – 2= 7

Answer:

Given, x -2 = 7

=> x – 2 + 2= 7 + 2 [Adding 2 both sides]

=> x = 9

Question 2:

Solve of the following: y + 3 = 10

Solution:

Given, y + 3 = 10

=> y + 3 – 3 = 10 – 3 [subtracting 3 on both side]

=> y = 7

Question 3:

Solve the following: 6 = z + 2

Answer:

Given, 6 = 2 + z

=> 6 – 2 = z + 2 – 2 [Subtracting 2 both sides]

=> 4 = z

=> z = 4

Question 4:

Solve the following: 3/7 + x = 17/7

Answer:

Given, 3/7 + x = 17/7

=> 3/7 + x – 3/7 = 17/7 – 3/7 [Subtracting 3/7 on both sides]

=> x = (17 - 3)/7

=> x = 14/7

=> x = 2

Question 5:

Solve the following: 6x = 12

Answer:

Given, 6x = 12

=> 6x/6 = 12/6 [Dividing 6 on both side]

=> x = 2