0:01
so first step is lay out the problem
0:06
and then we're going to turn this into a
0:08
positive because we have two negatives
0:10
okay when you have two negatives what
0:13
happened to it does it go positive and
0:15
negative and negative always gives you
0:17
positive good right so we're gonna have
0:23
now the next step is to turn each of
0:25
these fractions into What improper
0:28
fractions right so that's going to be
0:33
okay by negatives three times five
0:38
plus two over five and then the same
0:42
times seven plus four over seven now we
0:46
three and five is fifteen plus two
0:48
Seventeen so negative Seventeen over
0:51
five plus two and seven is fourteen plus
0:57
over seven now the next step is to find
1:00
what the lowest common denominator right
1:02
so we lay them out individually five
1:06
and I finally want to provide I'm
1:08
looking for a common multiple the lowest
1:10
common multiple right so five is five
1:19
30 35 and then 40 and so on right now
1:23
since I already know they're gonna have
1:25
35 in common uh this is why I stop here
1:34
35 once what once I get it close to the
1:37
once I find the lowest common multiple
1:39
I'll start I don't need to go any
1:41
further right so I'm gonna Circle this
1:45
and now the next step is how do you go
1:48
from 5 to 35 you times by seven right
1:52
Times by seven so now when you do
1:54
something in the denominator you have to
1:56
do the same thing on the numerator okay
1:58
we talked about that uh yesterday
2:01
so I'll do the same thing here now this
2:03
turns into 7 times negative 17 this is
2:14
and all you have to do now is just
2:17
subtract what is negative 119 minus 90.
2:24
when you have numbers of opposite side
2:26
you subtract them and keep the signs
2:30
five times eighteen that's nine right
2:33
and then you stop here and that's it all
2:35
right so now once you repeat the same
2:37
steps with this problem all right the
2:40
last one okay thank you you got it all
