Question

Given that a = 3 and b = -1, what is the value of 2a - b?

Answer 1

the answer is 7.

Explanation:

here's why......if u place the 3 where a is it will become multiplication so that would be 2 times 3 minus b now but if u place -1 the minus becomes addition so it will be 6+1 which is 7.

Answer 2

The value of expression when a=3 and b=-1 is 7

Explanation:

Given expression is:

2a - b

Also given that

a = 3

b = -1

In order to find the value of the expression, we have to put 3 in place of a and -1 in place of b in the expression

So putting the values

`=2(3)-(-1)\\=6+1\\=7`

Hence,

The value of expression when a=3 and b=-1 is 7