B/2 = -7 + B multiply the two aspects by 2 (*2)B/2 = 2(-7+B) simplify B = -14 + 2B subtract 2B from the two aspects B (-2B) = -14 + 2B (-2B) simplify -B = -14 divide by a unfavourable to isolate your variable -B/- = -14/- simplify B = 14 --------------------------------------... to examine: positioned your fee for B that's 14 interior the equation the place B is located 14/2 = -7+14 7 = 7 and the solutions are an analogous so that's right
Comments
First , you want divide both sides by 'r'.
Then you have S = C + C.
That's the same as 2 * C or 2C.
This you means you can divide both sides by 2.
So it's S/2.
S = C + rC
factor out C on the right side:
S = C(1 + r)
divide both sides by (1 + r):
S/(1 + r) = C
- .--
S = C + rC
S = C ( 1 + r)
C = S / ( 1 + r) ANSWER
S = C + rC
S = 1C + rC
S = (1+r)C
S/(1+r) = C
1. Factor out the C on the right: s = C (1 + r)
2. Divide both sides by (1+r): s/(r+1) = c
B/2 = -7 + B multiply the two aspects by 2 (*2)B/2 = 2(-7+B) simplify B = -14 + 2B subtract 2B from the two aspects B (-2B) = -14 + 2B (-2B) simplify -B = -14 divide by a unfavourable to isolate your variable -B/- = -14/- simplify B = 14 --------------------------------------... to examine: positioned your fee for B that's 14 interior the equation the place B is located 14/2 = -7+14 7 = 7 and the solutions are an analogous so that's right
S=r since you woud subtract c from one side then divide c by c and be left with S = r (i think)