I am not sure but I think the answer is of second one.
Answer:
x=8 and y=21
Step-by-step explanation:
12x-28=7x+12 (the 2 angles are equivalent)
12x-7x=12+28
5x=40
x=8
9y-77 + 12x-28 =180 (the sum of those 2 angles is a flat angle (180°))
9y-77+12*8-28=180
9y=180+28+77-96
9y=189
y=21
Answer:
hbvthj rg rkgn tlkeg ergtn ergkl efhtlkjer ht efkthn dkhtn lkeghkt erthkl gngkh htlkn ht
Step-by-step explanation:
