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Oksanka [162]
3 years ago
15

I have some answers the these problems but I just wanna make sure there right.. PLEASE Help??

Mathematics
1 answer:
yanalaym [24]3 years ago
3 0
7x+12+63=180
8x+12=180
Subtract 12 from both sides
8x= 168
=c=21

10x-40=50
Add 40 to both sides
10x=90
X=9

4x+72+2x-12=180
6x +60 =180
Subtract 60 from both sides
6x=120
X=20
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