The sum of 5 times in number and 7 equal 4

n = -0.6

Step-by-step explanation:

5n + 7 = 4 is our equation.

First we subtract seven on both sides.

That will leave us with: 5n = -3

Then we will divide by five on both sides.

And our answer will be n = -0.6

:> I hope this helps!

let soccer = x and golf = y

part a

1st equation: x + y = 125

2nd equation: x = y +45

part b

replace x in the 1st equation with the 2nd one:

y + 45 + y = 125

simplify:

2y + 45 = 125

subtract 45 from each side:

2y = 80

divide both sides by 2:

y = 80/2

y = 40

she plays golf for 40 minutes.

part c

no because she plays soccer for 45 minutes longer than golf 40 +45 =   85 minutes, not 80 minutes.