128 degrees.
An angle's supplement, when added to the original angle, will form a straight (180 degree) angle.
X+(x+2)+(x+4)=78
3x+6=78
3x=72
x=24
Final answer: 24, 26, 28
A or C makes the most sense
From the looks of it, I would say it’s triangles 3 and 4. Hope this helps!
38 < 4x + 3 +7 - 3x (original equation)
38 < 4x - 3x + 3 + 7 (combine like terms)
38 < x + 10 (simplify)
38 - 10 < x + 10 - 10 (subtract 10 from both sides to get (x) alone)
28 < x (simplify)
x > 28 (switch to get x on the left (its proper equation writing >.<) )
