Question

2. Solve each of the following equations by using
inverse operations :
A. (i) a + 7 = 12
(ii) 10 + c = 23
(iii) 9 = d + 2
(iv) h + 8 = -12
1
(v) x + 9.2 = 10
(vi) a + 3 = 5
2 1
2
(viii) y + 10 = 10
(vii)
-+n
3 3​

Answer 1

Answer:

2. Solve each of the following equations by using

inverse operations :

A. (i) a + 7 = 12

(ii) 10 + c = 23

(iii) 9 = d + 2

(iv) h + 8 = -12

1

(v) x + 9.2 = 10

(vi) a + 3 = 5

2 1

2

(viii) y + 10 = 10

(vii)

-+n

3 3

Answer 2

Answer:

(i) a = 5

(ii) c = 13

(iii) d = 7

(iv) h = -20

(v) x = 0.8

(vi) a = 2

(vii) Incomplete Question

(viii) y = 0

Step-by-step explanation:

(i) a + 7 = 12

=> a + 7 - 7 = 12 - 7  [Subtracting 7 from both sides of the equation]

=> a = 5

(ii) 10 + c = 23

=> 10 + c - 10 = 23 - 10 [Subtracting 10 from both sides of the equation]

=> c = 13

(iii) 9 = d + 2

=> 9 - d = d + 2 - d [Subtracting d from both sides of the equation]

=> 9 - d - 9 = 2 - 9 [Subtracting 9 from both sides of the equation]

=> -d = -7

=> d = 7  [Multiplying both sides of the equation by (-1)]

(iv) h + 8 = -12

=> h + 8 - 8 = -12 -8  [Subtracting 8 from both sides of the equation]

=> h = -20

(v) x + 9.2 = 10

=> x + 9.2 - 9.2 = 10 - 9.2  [Subtracting 9.2 from both sides of the equation]

=> x = 0.8

(vi) a + 3 = 5

=> a + 3 - 3 = 5 - 3 [Subtracting 3 from both sides of the equation]

=> a = 2

(vii) Incomplete Question

(viii) y + 10 = 10

=> y + 10 - 10 = 10 - 10 [Subtracting 10 from both sides of the equation]

=> y = 0