Evaluate the expression when $$ a=6 $$ and $$ b=-7 $$. $$ 2 a-b $$

Question

UpStudy AI · Accepted Answer

1. Substitute $$ a = 6 $$ and $$ b = -7 $$ into the expression:
   $$
   2a - b = 2(6) - (-7)
   $$

2. Compute the multiplication:
   $$
   2(6) = 12
   $$

3. Recognize that subtracting a negative number is equivalent to addition:
   $$
   -(-7) = 7
   $$

4. Add the results:
   $$
   12 + 7 = 19
   $$

The final evaluated result is $$ 19 $$.
When $$ a = 6 $$ and $$ b = -7 $$, the expression $$ 2a - b $$ equals 19.

Evaluate the expression when and .