Solve for n.
21m + 14n=-7
n =

n = - m or n = -0.5 - 1.5m

Step-by-step explanation:

21m + 14n = -7 (subtract 21m from each side)

14n = -7 - 21m (divide everything by 14)

n = - m

n = - m or n = -0.5 - 1.5m

Answer

n=1/2 +3m/2

Step-by-step explanation:

math calculator

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.

1; 35 is the ratio

step-by-step explanation: