Question

If ab + 5a + 3b + 15 = 24 and a + 3 = 6, then b+ 5 = ____? a.5
b. 50
c.4 d. 12
​

Answer 1

Respuesta:

c. 4

Explicación paso a paso:

a + 3 = 6

a = 6 - 3

a = 3

ab + 5a + 3b + 15 = 24

(3)b + 5(3) + 3b + 15 =24

3b + 15 + 3b = 24 - 15

6b = 9 - 15

6b = -6

b = -6/6    

b = -1

b + 5 =

- 1 + 5 = 4

Luck :)