Question

cross multiply 7/b + 5 = 10/5

Answer 1

is your question : 7/(b + 5) = 10/5 ??

Answer 2

yes im trying to find out what b = to

Answer 3

7/(b + 5) = 10/5
cross multiply
10(b + 5) = (7)(5)
10b + 50 = 35
10b = 35 - 50
10b = -15
b = -15/10 reduces to -3/2

check...
7/(b + 5) = 10/5
7/(-3/2 + 5) = 2
7/(-3/2 + 10/2) = 2
7/(7/2) = 2
7 * 2/7 = 2
14/7 = 2
2 = 2 (correct)

b = -3/2

Answer 4

any questions ?

Answer 5

thx

Answer 6

6/b-1 = 9/7

Answer 7

6/(b - 1) = 9/7
cross multiply
9(b - 1) = 6(7)
9b - 9 = 42
9b = 42 + 9
9b = 51
b = 51/9 which reduces to 17/3