If m angle ABD=79 degrees , what are m angle ABC and m angle DBC
Since together they equal 79o just add them together, solve for x, and then plug it back in.
ABC + DBC = ABD
(8x – 3) + (5x + 4) = 79
add like terms 13x + 1 = 79
13x = 78
x = 6
Plug 6 back in to ABC (8 • 6) – 3 = 45 so angle ABC = 45o
Plug 6 back in to DBC (5 • 6) + 4 = 34 so angle DBC = 34o
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