(29x – 3)
(13y — 17)
(15х +7)

Answer:
x=4
y=10
Step-by-step explanation:
Look at (29x–3) and (15х+7). Those two added together equal 180. 29x+15x=44x, and 7–3=4, so the equation is 44x+4=180.
44x+4=180
–4 –4
44x=176
/44 /44
x=4
Next, solve (29x–3) and (15х+7).
15(4)+7=67.
29(4)–3=113
113+67=180, so both are correct.
Now, because of the alternate exterior rule, we know that (29x–3) and (13y-17) equal the same amount. Since we know that (29x–3) equals 113, that means that 13y–17=113
13y–17=113
+17 +17
13y=130
/13 /13
y=10
And just to make sure, we check the equation to make sure it's correct.
13(10)–13=117 is correct.