Answer:
27.5=x
Step-by-step explanation:
The sum of the measures of supplementary angles is 180 degrees.
so its
(4x+7)+(2x+8)=180 degrees
combine like terms and get
6x+15=180 degrees
subtract 15 from both sides and get
6x=165
divide both sides of the equation by 6 and get
27.5=x
to check your answer, plug 27.5 back into the original equation
(4(27.5)+7)+(2(27.5)+8)=180 degrees
180=180, so the equation is correct.
