Question

I need the answer asap....

Answer 1

`x=9`

Explanation:

ABC is the sum of the angles CBD and ABD. So:

`\angle ABC=\angle CBD+\angle ABD`

Substitute them for their equations:

`(-7x+241)=(-4x+123)+(154-7x)`

Solve for x. Combine like terms on the right:

`-7x+241=-11x+277`

Add 11x to both sides:

`4x+241=277`

Subtract 241 from both sides:

`4x=36`

Divide both sides by 4:

`x=9`

The value of x is 9.

And we're done!