Question

Please solve for x. (-:

Also please show me a step-by-step, thanks! uwu

Answer 1

`x=27`

Explanation:

we know that

`(3x+9)^o+90^o=180^o` ----> by supplementary angles (form a linear pair)

Solve for x

Combine like terms

`(3x+99)^o=180^o`

subtract 99 both sides

`3x=180-99\\3x=81`

Divide by 3 both sides

`x=27`