(6 • 3 - 2x +3) - (-3 • 3 + 5 • 2 + 4x - 7)
first lorne added all binomials
(21 - 2x) - (-6 + 4x)
then took away the parentheses
21 - 2x + 6 + 4x
added them again o_o
27 + 2x
and ended up you her answer, shown above
Answer:

Useful Information:
Co-interior angles add to 180°
Step-by-step explanation:
The first step is to add 4x to 5x, which gives you 9x. This is because co-interior angles add up to 180, so 4x+5x=180. Co-interior angles can be spotted by their C shape.
To work out the value of x you would need to divide 180 by 9, which gives you 20°. This is because 9x is equal to 180. This means that x is equal to 180 divided by 9.
1) Add 4x to 5x.

2) Divide 180 by 9.

To put a certain amount of space in between
Answer:
2 : 1
12 : 6
30 : 15
Step-by-step explanation:
Look at the ratios one by one. Starting with 6 : 3, we can see that it's of the form 2a : a.
2 : 1
12 : 6
30 : 15
These are all equivalent.
Answer:
Step-by-step explanation:
question 1a) hey, so it would look like this for example:
question 1b) no, because they don't follow the rules of a 30-60-90 triangle (like the one shown below)
tell me if u have any questions