1) Find x, if 1/3 of x is 14
2)Find x ,if 1/5 of x is 14
3)Find x,if 2/5 of x is 14
4)Find x,if 7/8 of x is 14

Please explain how you got the answers! Thanks!

Respuesta :

"of" means multiply      and         "is" means equal

1. [tex]\frac{1}{3}[/tex]x = 14

                                x = 14(3)      multiply both sides by 3 to isolate "x"

                                x = 42

2. [tex]\frac{1}{5}[/tex]x = 14

                                x = 14(5)      multiply both sides by 5 to isolate "x"

                                x = 70

3. [tex]\frac{2}{5}[/tex]x = 14

                                2x = 14(5)      multiply both sides by 5

                                2x = 70

                                  x = 35         divide both sides by 2 to isolate "x"

4. [tex]\frac{7}{8}[/tex]x = 14

                                7x = 14(8)      multiply both sides by 8

                                7x = 112

                                  x = 16         divide both sides by 7 to isolate "x"

Answers: 42, 70, 35, 16