Question

If (2 + 5) = 3(3 − 10) then =? ​

Answer 1

Given, (2n+5)=3(3n−10).

⇒ 2n+5=9n−30.

Transposing 2n to RHS and it becomes −2n and −30 to LHS it becomes 30

⇒ 30+5=9n−2n

⇒ 35=7n.

Multiplying both sides by

7

1

.

⇒ 35×

7

1

=7n×

7

1

⇒ 5=n.

Answer 2

(2+5)=3(3-10)

10=3(-7)

10=-21

=-31