Question

Which equation should be used to solve for x? Solve for x.

Question options:

x+52+51+84= 180; x=7


180-51-84+52=x; x=97


x+52+84+51= 90; x=-97


x+52+51+84= 180; x=-7

help

Answer 1

x+52+51+84=180; x=-7

Explanation:

-7+52 degrees = 45

51 degrees = 51

84 degrees= 84

+ -------

180 degrees

all angles in a triangle should add up to 180 degrees.