Question

HELP

16. Create an equation for the problem.
17. Combine the like terms in your equations for question 16
18. Solve for X

Answer 1

16.
`(x+3)+(x-1)+(x+1)=90`

17.
`x+3+x-1+x+1=90\\3x+3-1+1=90\\3x+3=90`

18.
`3x+3=90\\3x=90-3\\3x=87\\x=(87)/(3) \\x=29`

Answer 2

x = 29

Explanation:

the 3 angles (x + 3) , (x - 1) , (x + 1) form a right angle (90° )

sum the 3 angles and equate to 90

x + 3 + x - 1 + x + 1 = 90 ( collect like terms on left side )

3x + 3 = 90 ( subtract 3 from both sides )

3x = 87 ( divide both sides by 3 )

x = 29