4) Melissa and Trina are training for a marathon. This week, Melissa ran 3 fewer than twice as many miles as Trina. Together they ran 39 miles this week. Write and solve an equation to determine how many miles Trina ran.

1

1

Answer is 14

Step-by-step explanation:

X+2X-3=39

3X-3=39

3X=42

Divide by 3 on both sides.

b

2

−

b

b

3

+

7

b

2

+

14

b

+

6

%

−

3

b

3

+

7

b

2

+

14

b

+

6

%

step-by-step explanation:

pay attention in your classes and concentrate the best thing you can do to raise your test scores is to pay attention when you're supposed to be learning the material: in class!

take good notes.

do your homework.

use mnemonics and other tricks.

do practice tests.

note: the best i know.