Question

Find the value of 3m when m= –2.

Answer 1

$\sf{answer}$

given,

m = - 2

to find,

value of 3m.

$\sf\underline{solution}$

to find the value of 3m we need to substitute the value of m in 3m.

.: 3m = 3×-2

= - 6

.: the value of 3m if m = - 2 is - 6.

∆ KNOW MORE ∆

1) when we are multiplying a positive integer witha negative integer then it results in negative integer

Ex:- 6 ×- 3 = - 18.

2) when we are multiplying a negative integer with a positive integer then it results in negative integer.

Ex:- -5×4 = -20.

3) when we are multiplying both postive integers then it results in positive integer.

Ex:- 3×4 = 12.

4) when we are multiplying both negative integers then it results in positive integer.

Ex:- -7×-8 = 56.

Answer 2

Given :

3m ; m=-2

To Find :

value of 3m =

Solution :

3m = 3×(-2)

= -6

Answer:

The value of 3m when m= -2 is -6