You need to isolate the variables. For the first equation add x to both sides, which leaves you with y.
For the second equation, divide each side by 2 leaving you with
x= 6+y. Subtract y from each side. Subtract x from both sides. Now you have y= x + 6.
Now graph those equations.
Im assuming you mean 20pence? if so its 5 twenty pence in a pound so times 5 by 9 gives you 45
so there are 45 twenty pence in £9
Yes it is 1/8.You don’t multiply the top part of the fraction,just the bottom.
The answer is actually 42. Not 20.
You replace each x with 3
5(3)+9(3)
That 3 right next to the five means you multiply not add.
15+27=42
Brainliest my answer if it helps you out?