2:7 = 4:14 because each is equal to 2/7. If you simplify 4:14 by dividing by 2, it simplifies to 2:7.
for the first one set 3y+y=180 and y+x=180
the second one set w+y=180, 42+x=180, y+20=180, and 87+v
1. -6
2. 4
2. -1
The positive numbers will out rule the negative number. It's sort of like placing blocks over another set of blocks. :)
If you repost someone with more experiences can help you
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