C+ (-2)= 21= 21+2= 23+ (-2)= 21
23+ (-2)= 21 is the same as 23- 2= 21
Chat with our AI personalities
To find this: You know (B+C) = 7. Therefore you know (A+A )= 21 - (B+C). Therefore 21-7 = 14. So now you know (A+A) = 14. So you divide (A+A)/2. This equals 7. Therefore A = 7.
c+c+c=6 C=2 Because: 2+2+2=6
a + c - b = 3 + 2 - 5 = 5 - 5 = 0
7.5
2 PbO + C -> 2 Pb + CO2