51-3=48 slice.
48 slice/ 4 pizza= 12 slice
each extra large pizza have 12 slice.
Need a picture! Then I will be happy to help :
First, multiply. 7x-14-4x+9. Now, add the like terms. 3x-5.
1) Work out what 1/5 of 12 is
To do this, we divide 12 by 5
12/5 = 2.4
2) Multiply 2.4 by 15
2.4 x 15 = 36
<em>If you don't like decimals, you can also do it this way...
</em>
This can be rewritten as 15 x 1/5 x 12
Multiplications alone can be performed in any order
1) Work out what 1/5 of 15 is
1/5 of 15
15/5 = 3
2) 3 multiplied by 12
3 x 12 = 36
$6 ? 5+4 =9
9-3 =6
I don't know if this is correct but this is how I would do it