Question

Find the value of x.






A.


9




B.


18




C.


45




D.


90

Answer 1

You have 2 simultaneous equations.

Angles formed on a straight line always add up to 180 deg

SO - taking the 2 angles in the top right

(2y+x)+(2y-x) = 180 deg

You can therefore solve what y is

Then make an equation for the 2 angles in the top left (sum = 180)

You know y - so solve for x

Answer 2

so solving for y would be (2y +x) + (4x) =180?

Answer 3

That is the equation for the tpo left pair - but you must first solve for y using the top right pair.

Answer 4

(2y+x)+(2y-x) = 180 deg
simplify this equation - to solve for y

Answer 5

i got 45 for y? did i get it right?

Answer 6

yes

Now put that into YOUR equation for the top left pair - and solve for x

Answer 7

i got 30?

Answer 8

Not correct I think

(2y +x) + (4x) =180 y=45

solve for x

Answer 9

so (2(45)+x) + (4x) = 180
(90+x) +(4x) =180
90+3x=180
3x= 90
30 thats how i got it?

Answer 10

OK - as I said - that is not correct

Check your sum

Answer 11

The first line of your last post is OK

You have made a mistake further down.....

Answer 12

okay so from (90+x) + (4x)=180 where should i go?

Answer 13

This is maths

It is a simple equation - you have made a simple mistake.

Just check your work

Answer 14

You can see that this does not sum to 180