Question

Find the value of a in the given equation 6 – 7 ( a + 3 ) = -36
Please tell this answer

Answer 1

Answer:

Correct option is

D

5

12

Given,

6

z

(

2

3

)−7=−2(3z−4)

⇒

12

3z

−7=−6z+8 ...[By Distribution Law].

Transposing x terms to one side, we get,

⇒

12

3z

+6z=8+7

⇒

12

3z+72z

=15 …[Cross-multiplying the denominators on the LHS]

⇒

12

75z

=15 ...[Simplifying]

⇒z=

75

12×15

=

5

12

.

Hence, option D is correct.

Answer 2

6 - 7(a+3) = -36

6 - 7a - 21 = -36

-7a -21 + 6 = -36

-7a - 15 = -36

-7a = -36 + 15

-7a = -21

7a = 21

a = 21/7

a = 3