MATH HELP EASY MATH PROBLEM EASY POINTS!!?

15/20 for first

12/20 for second

You can get this by multiplying the numerator by the same thing you multiplied the denominator by in order to get the new denominator.

(so in the first one, (3x5)/(4x5))

3/4=?/20 what dpes ? equal

4 goes into 20 = x

x times 3 =

3/5=?/20 what does ? equal

5 goes into 20 = x

x times 3 =

and you have it from there

3/4 = 15/20

3/5 = 12/20

15/20

12/20

3/4=15/20

3/5=12/20

3/4=x/20 divide 4 into 20 and that what you multiply to get your answer. 3x5=15 4x5=20 15/20

3/5=x/20 divide 5 into 20 and that what you multiply to get your answer. 3x4=12 4x5=20 12/20

14 + 12 + 5 = 31 so 2 students are wearing both a) 14+12-2 = 24 b) 14-2 = 12 c) 12-2 = 10 Please note that alot of people will answer 26 for the first question, however this is incorrect: 29 - 5 = 24 (minus of people who arent wearing red OR blue 14+12 = 26 there is 26 blue and red colours but only 24 students this means 2 people must be wearing both colours as I just mentioned there is only 24 people so how many red and blue = 24 red not blue = red people less the people who wearing both blue not red = blue people less the people who wearing both

1- 15/20

2- 12/20

15

12

make the ?=X

then just cross multiply so, for the first one,

4x = 3(20)

4x = 60

x = 15

then, for the second one, also cross multiply,

5x = 3(20)

5x = 60

x = 12