-81= −45−9n i need help please

-45 - 9n = -81

-9n = -81 + 45

-9n = -36

n = -36/-9

n = 4

Hope this helps you. :)

4=n

Step-by-step explanation:

-81= -45-9n

+45   +45

-36= -9n

÷ -9     ÷-9

4= n

substitute:

-81= -45 -9 (4)

-81= -45 -36

-81= -81

answer is 1

Step-by-step explanation:

y∝x

y=kx

15=3k

divide 3 both sides

k=5

so y=5x

when y is 5

5=5×x

divide 5 both sides

x=1