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stellarik [79]
3 years ago
6

I need help with 7 and 8

Mathematics
1 answer:
Arte-miy333 [17]3 years ago
3 0
7. q+18 =22
q+18-18 =22-18  , q=4   
 at the problem q+18-18=22+18 mistake (should be subtracted from both sides) 

8. r+10-10=22-10 r=12
r-15+15=5+15  r=20
r-18+18=14 +18     r=32
r+5-5=15-5    r=10
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