Evaluate the expression when g=3 and h=21 .

h-6g

3

Step-by-step explanation:

Substitute 3 in for g and 21 in for h

h-6g

21-6(3)

Multiply first

21-18

Subtract

3

Hope this helps!

3

Step-by-step explanation:

So all we have to do is plug the values into the variables:

(21) - 6(3)

Now we just have to solve the pieces in the parentheses:

21 - 18

So we get 3.

Hope this helps :)

step-by-step explanation:

1. practice, practice & more practice

2. review errors

3. master the key concepts

do not try to memorise the processes.

4. understand your doubts.

5. create a distraction free study environment

6. create a mathematical dictionary

7. apply maths to real world problems.