Answer:
Revise
Step-by-step explanation:
Practice, ask if you don't understand, keep watching videos if you don't get it.
If you don't understand a question, ask for help!
Hope this helped!
Answer: 20
Step-by-step explanation: just do 100/5=20 so do 100/20=5 hope this helps!!
Answer:
2a + 30
Step-by-step explanation:
break it down so it is 4(a+5)
then work out -2(a-5)
so 4 x a then 4 x 5 which gives 4a + 20
then -2 x a then -2 x -5 which gives -2a + 10
then when you have 4a + 20 -2a + 10
do 4a - 2a which is 2a
do 20 + 10 which is 30
so the answer comes to 2a + 30
if anything doesnt seem right just comment and i will correct
hope this helps :)