Question

solve using the multiplication principle. -5/8 x = -9/10

Answer 1

multiply both sides by -1, then multiply both sides by 8 and finally multiply both sides by 1/5

Answer 2

like this? 5/40 x = 9/50

Answer 3

no.

Answer 4

post what you got when you multiplied both sides by -1

Answer 5

5/8 x = 9/10

Answer 6

then post what you got after multiplying both sides by 8

Answer 7

5x = 72/10

Answer 8

then post what you get when you multiply both sides by 1/5

Answer 9

did you get it?

Answer 10

x = 72/50

Answer 11

there you go. you can cancel out 2 in the numerator and denominator to get x = 36/25

Answer 12

wow, i did it! thx!

Answer 13

great!

Answer 14

what is 2/3 times 3/2?

Answer 15

6/6 =1?

Answer 16

what is 4/3 times 3/4?

Answer 17

12/12 = 1

Answer 18

so what is -5/8 times -8/5

Answer 19

40/40 = 1

Answer 20

so -5/8x * -8/5 = -9/10*-8/5
x = 9*8/5*10
x = 72/50 = 36/25

Answer 21

the lesson here is if you multiply a number n by 1/n, you will always get 1. 1/n is called the multiplicative identity of n

Answer 22

oh ok, i see now. great! thx!