alright, i want an explanation on how to do these so i can do the rest on my own...
the first problem is
j/3 = 2/5
how do i solve that?
4 answers
Multiply both sides of the equation by 3. You want to get an equation with just j on one side.
One way is to cross multiply.
5j = 6
j = 6/5
Another way is to multiply both sides by a number that will clear both the 3 and the 5 from the denominator. Such a number is 15. Like this.
15*j/3 = 15*2/5
5j = 6
j=6/5
I hope this helps.
5j = 6
j = 6/5
Another way is to multiply both sides by a number that will clear both the 3 and the 5 from the denominator. Such a number is 15. Like this.
15*j/3 = 15*2/5
5j = 6
j=6/5
I hope this helps.
You times j by the reciporacal:
3/1 x j/3
Then whatever you do to oneside you have to do to the other:
j=2/5 x 3/1
Find a common denominator:
2/5 x 15/5 = 30/5
Which reduces to 6/1 or just 6
So j=6
3/1 x j/3
Then whatever you do to oneside you have to do to the other:
j=2/5 x 3/1
Find a common denominator:
2/5 x 15/5 = 30/5
Which reduces to 6/1 or just 6
So j=6
multiply both sides by 3/1 and simplify
8 answers