Question

help me solve
.15(n-40)=.07(n)
i don't know what to do!
some people say n=0 others are saying n=75

Answer 1

ok first is that .15?

Answer 2

Trying to help does that say .15?

Answer 3

you need to distribute

0.15n - 6 = 0.07n

now subtract 0.07n from both sides

0.08n - 6 = 0

add 6 to both sides

0.08n = 6

now solve for n

Answer 4

first get rid of the parenthesis
multiply each term inside by what is outside
this is the distributive property

group like terms
leave the variable on on side and the numbers on the other.
this is an equation so what you do to one side do to the other to maintain the balance.

solve for the variable
divide each side by the coefficient of the variable
variable = number

review what @campbell_st did above

Answer 5

always a good practice to check your answer in the original