Answer: 35
Step-by-step explanation: Recognize that m∠ABC and ∠ form a linear pair and thus are supplementary, meaning their measures add up to 180 ∘
Set up the equation
(4 x)∘+(5+)∘=180∘(4x) ∘ +(5+x) ∘ = 180∘
and solve for x
Combine like terms and solve the linear equation for x .
4x + 5 + x = 180
5x + 5 = 180
5x = 175
x = 35
hope this helps ^^
